---
title: Getting started with Link
slug: getting-started-with-link
published_at: 2022-05-10 19:53:16 +0000
updated_at: 2023-01-30 22:52:23 +0000
summary: 
description: Learn how to integrate Link into your payment flow with PaymentElement for faster checkout. We'll use an express.js backend and a react front end with an existing PaymentElement integration. You'll learn how to add the new LinkAuthenticationElement, and the ShippingAddressElement to smooth onboarding and increase conversions from your customers.  Link is a special payment method type that hooks into Elements using a new email authentication element that sends a one time pin to the customer's phone number. Once authenticated, Elements are populated with the customer's previously saved payment methods and addresses.   ### Presenters  CJ Avilla - Developer Advocate at Stripe Diana Chen - Link Product Marketing at Stripe  ### Resources  Stripe: https://www.stripe.com Link overview: https://stripe.com/docs/payments/link Accept a payment with Link: https://stripe.com/docs/payments/link/accept-a-payment Code: https://github.com/cjavilla-stripe/link-in-payment-element Quick start video: https://www.youtube.com/watch?v=LYRJzu5t3CA   ### Table of contents  01:05 What is Link? 04:58 Enable Link payment method type 07:10 Passing beta headers on the server 08:37 Understanding payment method types 10:45 Passing beta headers on the client 13:27 Install authentication element 17:00 Does link persist across Stripe Accounts? 17:41 Install shipping address element 19:45 Pre-fill email address 21:40 Handle email address change events 23:37 Handle shipping address changes 28:13 Merchant domain cookies 41:30 Customer saved data 42:50 Conclusion   ### Support  If you have a question, please feel free to reach out to our support team at support.stripe.com or on Discord at stripe.com/go/developer-chat.  ### Updates  Sign up to stay updated with developer news: go.stripe.global/dev-digest   ### Feedback  If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88 #Stripe #Payments
tags: [stripe, payments, link, link for faster checkout, faster checkout with link, remember me, payment element, node, react.js, create react app, express.js, cookie-parser, merchant domain cookies, @cjav_dev]
views: 950
author: CJ Avilla
url: https://www.cjav.dev/videos/getting-started-with-link
youtube_url: https://www.youtube.com/watch?v=-ufvKuYAtSg
youtube_id: -ufvKuYAtSg
embed_url: https://www.youtube.com/embed/-ufvKuYAtSg
thumbnail_url: https://i.ytimg.com/vi/-ufvKuYAtSg/hqdefault.jpg
type: video
---

# Getting started with Link

*Published: May 10, 2022*
*Views: 950*

## Watch

[Watch on YouTube](https://www.youtube.com/watch?v=-ufvKuYAtSg)

[![Getting started with Link](https://i.ytimg.com/vi/-ufvKuYAtSg/hqdefault.jpg)](https://www.youtube.com/watch?v=-ufvKuYAtSg)

## Description

Learn how to integrate Link into your payment flow with PaymentElement for faster checkout. We'll use an express.js backend and a react front end with an existing PaymentElement integration. You'll learn how to add the new LinkAuthenticationElement, and the ShippingAddressElement to smooth onboarding and increase conversions from your customers.

Link is a special payment method type that hooks into Elements using a new email authentication element that sends a one time pin to the customer's phone number. Once authenticated, Elements are populated with the customer's previously saved payment methods and addresses.


### Presenters

CJ Avilla - Developer Advocate at Stripe
Diana Chen - Link Product Marketing at Stripe

### Resources

Stripe: https://www.stripe.com
Link overview: https://stripe.com/docs/payments/link
Accept a payment with Link: https://stripe.com/docs/payments/link/accept-a-payment
Code: https://github.com/cjavilla-stripe/link-in-payment-element
Quick start video: https://www.youtube.com/watch?v=LYRJzu5t3CA 

### Table of contents

01:05 What is Link?
04:58 Enable Link payment method type
07:10 Passing beta headers on the server
08:37 Understanding payment method types
10:45 Passing beta headers on the client
13:27 Install authentication element
17:00 Does link persist across Stripe Accounts?
17:41 Install shipping address element
19:45 Pre-fill email address
21:40 Handle email address change events
23:37 Handle shipping address changes
28:13 Merchant domain cookies
41:30 Customer saved data
42:50 Conclusion


### Support

If you have a question, please feel free to reach out to our support team at support.stripe.com or on Discord at stripe.com/go/developer-chat.

### Updates

Sign up to stay updated with developer news: go.stripe.global/dev-digest 

### Feedback

If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88
#Stripe #Payments

## Transcript

hello and welcome back to stripe developer office hours i'm cj avila developer advocate here at stripe and i'm joined today by diana and uh welcome diana how's it going uh i think you're muted so you'll have to unmute but then yeah like we'd love to hear um yeah tell us about kind of what you do at stripe and uh yeah we're we're super excited to introduce link so cool yeah let's get into it let's get into it hey cj um hi everyone i'm diana i'm on the marketing team here at stripe um and i work on link full time which is very exciting you guys are going to hear a lot about that in a second um i also want to shout out that i have my colleague alex here um he's not on video he's going to be on um chat answering any questions that you have um he's on the product team so really really good at answering any of those technical questions that you guys might have um on the link integration fantastic so what is link i guess like maybe let's let's start there what is this yeah this new link payment method type yeah totally so excuse me um link actually lets customers save and reuse their card and address details across all merchants to deliver a faster checkout experience and a faster payment experience um it's a one-click checkout product that is um yeah it expedites uh your entire payment process with link customers can actually check out four times faster which is incredibly powerful um it's really a seamless checkout experience it helps reduce current abandonment and boost your conversion rate which you know is something that we're all looking at amazing okay so it's we know that it's faster and we've already sort of had link as part of checkout and payment links right like yeah um how long or when was that released and yeah maybe people have seen this in the wild and what would they be yeah familiar with totally yeah so um the first iteration of link was about eight years ago it was a product called remember me um and this is all in service of stripes mission to really deliver a really good patent experience um to hope to help businesses that that use stripe but also to help customers that use trip to check out um so it started eight years ago with remember me and it's faced a couple of iterations since then um and right now um yeah it was on most recently um checkout so if you use checkout um as a product it's already on there um and then now you're actually um now we're focusing on elements users and thinking about how to integrate it with people who have custom checkout experiences amazing okay so yeah it's going to be something something like this this is this is kind of like what we're going to go over today is building this experience where you can enter your email address your if you have authenticated before you will get a text message with a one-time pin you enter in your pin and then you can very quickly just reuse payment methods and addresses that you've already saved before so um i was like super blown away to hear 4x the the speed for uh checkout that's really surprising um and it's it's really like something that i think everyone is going to want to integrate as part of their payment element integration um one other thing that i'm curious too is just like um maybe if you could kind of go into you know how to join the beta and how to participate in the beta uh you know this as this is still it's like not generally available so not everyone can can just jump into it so how does someone yeah go about joining the beta yeah so joining the beta um anyone who has access to the live stream or anyone who's using elements right now um you are gated in to the dock so you actually can have access to all the docs you can see everything that not actually everyone gets to see joining the beta is as easy as integrating link um make sure you've checked the emails um that we've sent you to actually look at the specific steps and access the docs but yeah joining the beta is as easy as actually just integrating link which we're going to talk about later today as a quick reminder uh because i think cj you mentioned this because the product is in private beta some of the docs actually aren't available to all of our users yet so make sure and this trips me up all the time make sure that you're logged into your dashboard so you can actually see the documentation otherwise you might get an error button or an error message within docs okay awesome perfect and uh yeah we've got we've got some folks sounding off uh hey hello how's it going welcome welcome alex uh so yeah i think we're gonna we'll jump into um some of the docs here and then maybe talk about sort of uh high level how you can enable the payment method from the dashboard so one of the things that's really interesting oh yeah and then also dana was mentioning logging in to the docs so like up here in the top right you'll see your account if you're logged in so from the dashboard something that you'll want to do is go to the settings tab and under the payment methods section you will see link as a payment method type now available that is like a new payment method type that you can turn on for your account so you can drop in here and you can say oh i want to turn on this payment method that will enable it when you are deriving your payment method types automatically this is supported in checkout it's also supported by the payment element we'll look at a couple different ways to do that but this is the demo we're going to go through today so uh you know let's let's uh imagine that you're selling some sort of book this one is about learning photography some of our previous demos with pasha have been about just purchasing the photo directly but today's demo we're going to talk about buying a book that will allow you to learn how to actually become you know a real world class photographer 59 usd and we're collecting the email address we're also collecting the shipping address and some other things so that we can send the book and down here at the bottom you'll see this is the payment element so we've got both the card element and u.s bank account for ach that we're using to collect payment we've also sort of matched some of the style here with the appearance api but what i want to do is go through and talk about you know what would it take to integrate the link payment method type so just kind of going through what we've already got today you might have to fill in all of your details here typing in 424242 that we all know and love um but you also have to fill in your full address your full email and everything and then you know you've successfully bought the book but now say that maybe you want to send the book to a friend and you want to check out again when you come back you'll have to re-enter all of those details and so we're going to see how to do this much much faster with the link payment method type let's jump over to the code and just take a look at what we've got going on so on the client side this is a client generated with create react app so that's our front end and on our server we're going to run express so this is our express server so let's take a tour of the back end first at the top we're installing some dependencies loading some environment variables and then initializing stripe node we're passing in the api version here and something that we'll need to do during the beta is to pass in link beta is v1 um and then i believe this is still true right diana we still need to pass in the the link beta headers okay yeah that's right um so this is this is how you uh how you indicate that you are accessing a beta api endpoint is by passing along this header so we're going to set that as our server side header we've also got some other you know basic setup for express going on here our config route is sending back the publishable key so that we can use that with stripe.js and the client and this is the most interesting endpoint that we're gonna have in our application today and that is the one to create a payment intent now if you were paying attention on twitter and uh you know for some of the other stripe announcements you might have saw that we also announced an orders api uh we're not gonna talk about orders today today we're working directly with payment intents but um link and orders are gonna be a really powerful combo we're super excited to introduce that that combination but today we're dropping down a little bit lower to the bare metal and talking about payment intents and on the server the way this works with orders is going to be very similar to payment intents you'll create a payment intent and pass its client secret back to the front end with an order you'll do the same thing you'll create an order and pass the orders client secret back to the front end it'll work exactly the same so with our payment intent here we're specifying the currency and the amount we want to collect as well as automatic payment methods enabled true now what this does is it says let's look at the dashboard and see which payment method types this account has enabled in the dashboard and we will uh depending on the currency and whether or not this is going to be sort of a recurring thing we will display certain payment method types in the payment element now what i wanted to do is like uh this is so this is technically a best practice you want to enable this automatic payment methods anytime but what i wanted to do is just show that we can explicitly list out the payment method types uh here as a list of strings so for instance if we wanted to just enable the card payment method type and if we were to refresh our checkout page here you'll notice that we don't accept the bank account anymore now we're just accepting card but if we put in uh us bank account then we'll get back our ach payment method as another tab so we have u.s bank account and we have card now one more payment method type we need to add here is called link but when we refresh the page we're not actually going to see a new payment method type there in fact we're uh we're it's spoiling it's spoiling this a little bit like you're seeing that we're already logged in to uh to a link account um so link is going to automatically log us in and this is happening because we have some cookies set so i'm actually going to go and clear my cookies which uh sort of it scooped me a little bit all right so now we have uh oh gosh i you know what i it's actually local storage okay it was cookies before um okay so inside of local storage for local host we have our cookie that is storing our auth session client secret so it knew that i was already logged into a link account and it was sort of pre-populating that payment method for me so what we're going to do is show how we can collect link as a another payment method type and again it's not going to show up as another tab here it's going to be integrated to the payment element in a little bit different way so the way we integrate this is on the client side if we go to source let's actually take a little a little bit of a tour here of the client side too so this is again a an app that was created with create react app um here inside of the app.js we're fetching the publishable key from the server using that config route and then we're calling load stripe load stripe is a method from the npm module for stripe.js that loads stripe from js.stripe.com and is a best practice again you want to always load stripe.js from our from our source so that you can always have the latest and greatest security patches in pci compliance now load stripe takes in the publishable key it also can optionally take a second argument which is this object where we're going to pass in the beta headers on the client side so here we're going to say betas is a list and we're also going to pass in the api version client side too so the api version is the latest we're on right now is 08 27 and then again link beta is equal to v1 we also need to specify the beta here so we're going to say link beta three so this is uh the number three i know this one is v one this one says three they're a little different um that's uh that's how it works so this is we're gonna where we initialize stripe now the stripe object that is the result or the stripe promise that is the result of this load stripe call is now being passed down as a prop to our payment component that we're going to now take a look at so inside of the payment component when the payment component first loads we hit the back end to create that client or the the payment intent and we get back that client secret then we use that client secret property to initialize an elements provider that we're going to use to wrap the checkout form so if you've gone through and watched any of the react stripe gs starters you'll know that we have like this is kind of the general setup when we're working with react now we're passing in the client secret here in addition though i want to point out that we're passing in uh an appearance api config that allows us to do really fancy things like set this font directly from google fonts that's pretty cool um and we're also passing in this fonts uh this fonts config that that loads the font for us so with the appearance api you can really really get a custom look and feel for your payment element all right let's take a look at that checkout form now so the checkout form is a component where we ultimately have all of our inputs and this is where we're rendering the payment element so the payment element comes from react stripe.js if we jump up here this is where we're going to load our new link authentication element so this is a new type of element that's exposed by react stripe.js this is also available inside of stripe.js and you can you don't have to use react you can use just html and javascript and again if you have any questions as we're walking through this please feel free to drop those into the chat we'd be happy to answer them live um but what we're going to do now is we're going to replace the email input with our brand new link authentication element now this link authentication element is going to render just like a an email input so when we refresh the page you'll notice there was a little bit of a skeleton there but now we have this input that looks just like an email input and if i make this a little bit smaller what you'll see is that if i type in a new customer at example.com and i finish typing the email address you'll notice this save your info for one click checkout pops up as part of the payment element so if i don't have anything there it disappears if i enter a new customer at example.com and finish typing an email address that's valid then it appears and i can save my info for faster checkout next time notice also that if i have an existing customer uh the the standard one that we always like to use is jenny rosen example.com now this is a customer that's already been through our checkout flow once before and so the experience of the customer is that they would receive a text message with a one-time pin in test mode we can just enter in all ones is a valid and a valid way to test it there's also a couple different test one-time pins that you can enter that will trigger different failure modes or different test scenarios but what i wanted to show is that now we have authenticated with link what that does is it enables us to all like automatically pre-populate some payment method types so for instance if we wanted to add another payment method type this one will create a test payment that will bypass our pending our pending balance so we can add an address here and we will say buy today by adding a brand new payment method with our current logged in user now when we come back and we go to checkout again we are all we're automatically logged in and it's going to use the payment method we just created so we could say change and we can see now all of the payment methods that we've ever saved with link this is a really really powerful stuff all by dropping in and replacing that email input with this brand new link authentication input okay let's pause there for a second are there any questions uh any questions in the chat diana did you have any any thoughts at this point i mean this is uh this is like pretty powerful um and one one thing that you might be wondering is like okay there are still a bunch of inputs here we've got address city state postal code like are are we going to get any help with filling those in like uh and i guess yes like absolutely we're we we don't want customers to have to like enter that in um and so we are also going to enable you to um to pre-populate the shipping details but we do have a question here from jared and jared asks does link persist across different stripe accounts does link persist across different type accounts the answer is yes and that is really what unlocks like the network effects of everyone being able to uh you know set up their link one time on uh one checkout flow and be able to reuse that in other checkout flows so we we really are excited to um to empower our customers to simplify and smooth out their their checkout process so frictionless frictionless and faster checkout is what we're going for uh thanks jared for the question uh really appreciate it all right let's talk about simplifying these shipping details and while we're going through that please let us know in the comments if you have any questions so this is one of my favorite things to do when adding striped products and that is to delete code and so here is our new shipping address element as you may imagine we just put it in here shipping address element and um the shipping address element requires uh some props so we have to pass options that include the allowed countries i think and that is going to be a list of the countries that we allow shipping to all right so now what we can do is go back to our form and refresh the page and you'll notice that we no longer have to enter any shipping details they're already filled in here what's really cool is that this tracks several different addresses so for instance if jenny at on some you know through some link experience sent a book to her son jordan uh at some other place then maybe that is a saved address you know the same the same sort of experience that you would totally expect from all of the best uh ecommerce experiences is really really easy to build you can just drop in these three elements connect them up and you are ready to go all right now a couple there's there's a couple of gotchas though with uh with link and we want to make sure that that you're set up for success and that you're able to go through this flow uh and another thing you might be wondering is wait a second i already have an email for the customer we have a returning customer maybe you have a stripe customer object already so there's a couple of different edge cases right so the first one is maybe you already have the email of your user in your database and you don't want to make them enter that email address again so one thing you can do when you're configuring the link authentication element is you can actually drop in some default values for this you can say options and default values and you can set the email to whatever you want so in this case i guess we'll go along with the theme here and say jenny.rosen at example.com or in fact like maybe let's try new customer new customer at example.com i think i got the right number of curly braces there so let's say that you have a customer you've already stored their email address they're coming to your payment form for the first time they've never actually saved their info for faster checkout right now we're going to sort of register them as a brand new link a person within link so we're going to add the their address we're going to add their their name we'll call them new customer and they live on one two three main street we'll enter in a card for them and we're gonna save their information for checkout next time so um meets six seven five three oh no okay all right so uh bye today all right um and now we have a successful payment um and we can go back and now because we're pre-filling that address as soon as the page loads the customer gets a text message again they can enter in sort of the the one-time pin that they received we already have their shipping address their payment method and boom now they're able to like really quickly go through the checkout flow purchase and convert and we all love higher conversion because that means that we have higher balances in our stripe accounts which is amazing okay another thing you might be wondering it's like well if i don't already have a user maybe i don't have the customer email address already filled in what is there a way that i can get access to that email address and again the answer is yes so both the link authentication element and the shipping address element fire on change they fire a change event so we can say like handle new email as a function and we'll say handle new email is going to be something that fires when we have a new email address so console.log um like i don't know email changed and i think we'll just put the um e dot yeah we'll just log the entire object um and then if we look into the console and refresh the page then as we type in here we are seeing object object uh e dot target dot value i think is what we want let's see all right so we're going to say t what is e all right we're just going to log console.log e we'll log the entire event and then we're going to say email changed uh okay so as we type in t now you can see that the email changed and we see the element type value and the value of the things okay so i got the destination wrong so it's not target it's value.email and that will give you what the value of the email is but it will also tell you is the email complete and or is it empty so we can also say something like you know if e dot complete then do something once we've got like the full email address so you can sort of keep track of what the email was that was entered you might even call set email here so this often might be you know shown as like e is like set email of e dot value.email or something now we'll keep it as handle new email and same deal with the shipping address we can say on change we want to fire some event called handle new address and one use case that i found for this recently was when the address changed i wanted to recalculate taxes this is one of the features of the new orders api and so you could potentially attach this address to an order and then use the order to calculate the tax amount so const handle new address is going to be a new function that's going to look like this console.log address changed just to show kind of what this might look like console.log e um so let's say that you are uh down at the bottom we see that the address and email are changing right when the page loads but they have zero values in them so if we entered in the full jenny rosen at example.com you're seeing a bunch of different events fire down here as we're typing this in now one thing that's really interesting is as soon as we finish typing in our one time pin you're going to see address the address is going to be completed that's because as part of link or as part of someone going through the flow manually as soon as that address is finished you're going to get those uh that address changed event you'll also see it if someone is typing in as they type an address so this is a new so these are all like events that are firing as we're changing the address so uh that is how you sort of like access the uh existing or pass in existing data or access the change events for uh for those elements let's take a pause are there any questions um i think i mean we've got we've got a little bit more to go in the demo but already this is really really powerful stuff right like you can unlock a lot of really interesting payment flows and really decrease the friction for your users especially if you've already got the payment element integrated really this is the matter of sort of dropping in that link authentication element at a minimum and then also adding your shipping address information all right we've got another question uh is the beta available in the uk and i believe diana can correct me if i'm wrong but i it is available in the uk okay sorry the merchant has to be it's all right it's us only but the customers can be anywhere around the world got it got it got it okay so the merchant has to be in the u.s and then the customer can be anywhere around the world okay awesome awesome um thanks for the question yeah i think we're obviously we're always excited to expand to other places right so uh this i don't know um i we can't promise any deadlines or you know timelines but obviously this is something we'd love to share in other countries soon there's also some news about some new country availability coming soon so if you want to go over to strike.com global you'll see kind of like the global availability of stripe in your country and uh yeah really excited to see some of the countries on the list there uh one one quick thing to add on that one yeah specifically for the uk we're hoping to expand their later this year um so keep an eye out for that awesome later this year stay tuned yeah okay amazing amazing all right there is um so we've got we've got our link authentication element set up all of this is working by default it works with the um this local storage so we looked at that in the browser in the beginning i sort of had my payment details stored already in in local storage now there are some browsers where local storage does not persist between your uh between your browser session so for instance in safari so if we were to open up safari here and go to localhost 3000 and let's say that we log in as jenny.rosen example.com and we enter in our link authentication thing we've authenticated and we want to buy this book and we're super excited we um are so thrilled in fact that uh we want to go buy a gift but when we're going to buy the gift it's actually a couple days later so maybe we have like closed safari completely and we come back to safari and when we go to localhost 3000 again unfortunately we're no longer logged in so one thing that we want to do is or one thing that we could do with link is enable this thing called merchant domain cookies so it is possible with link to add a little bit of code on the server side that will store the cookie for for that authentication session so that you can persist across browser sessions where local storage is not being stored so that is something that we can do next so let's take a look at adding merchant domain cookies so here on the server what we're going to do is actually um yeah there's a couple different pieces to this so the first is when we create the payment intent we need to pass in some information and that is going to be let's see that payment method options and we need to tell the payment method options the previous cookie value when we're specifying the options for link so we're going to say that the persistent token is from rect.cookies link persistent cookie name this is going to be a constant that we're going to store okay so this link persistent cookie name is actually going to be some standard constant and that constant value that we recommend setting it to is just going to be some string that's prefixed with stripe.link and persistent token okay this is a brand new integration pattern we don't have this anywhere else in the stripe api and this is really to just unlock the an even smoother experience for those customers that are closing out their browser coming back later and um that you want to enable this for so the first part is we want to pass any persistent token that may have been there when we create the payment intent and the second part is that we want to store the persistent token anytime someone successfully pays so when they're done going through the payment flow we want to store that token now the way that this works is we actually need to create a brand new uh server side route that's going to be hit when someone is successfully done paying so let's add this here we're going to say app.get this is going to be a brand new route called retrieve payment intent and what this will do is we're going to try to retrieve the payment intent and expand its clients i'm sorry expand its uh payment method so we're going to grab the a payment intent we're going to pass in the payment intents id as a query string parameter we're going to expand the payment method which will contain a persistent token now the way this works is something like the intent uh will have a payment method and that payment method might have a link and if that's there it will have a potentially a persistent token and that persistent token will just store off into token now if there wasn't a token or i'm sorry if there was a token what we wanted to is store that in the cookie so we can do that like this we're going to use that same link persistent token cookie name we're going to pass in the token that we pulled off of the payment method and then we're going to set some parameters on the cookies we want it to be you know secure and same site http only and it'll expire in this is going to give us 90 days so that'll give us a 90 day window for our token now for all of this we actually want to wrap this in a try catch just in case this retrieving the payment intent fails the other thing is that we really only want to run this second block here if the status of the intent is either succeeded or the intense status is processing all right my formatting is super sad let's see okay so this is going to be uh catch e and if we have an error we will just console.log e and res.send error message meetup message otherwise we'll just render the entire intent back to the client and we can log that out okay so let's take a look here we're going to try to retrieve the payment intent with a query string parameter of payment intent if it's succeeded or processing we're going to see if we can pull a link persistent token off of the payment intent note that we're using this expand parameter so that we can expand the payment method and instead of just getting its id back when we retrieve it we will get the entire object if we get the entire object and it has this link hash that has the persistent token then we're going to like set this cookie again this is um this is all just so that we can successfully persist across um uh browser sessions okay uh all right hey what's up edward how's it going welcome we are implementing link today let us know if you have any questions in the chat uh okay so we've got we've got this set up i think we need one more [Music] okay that catch should have been there okay uh okay i think we have the right set of the right set of braces and brackets okay so the next step is in order to use cookies at all with npm what we need to do is npm install cookie parser which is an npm module for using cookies with express so we will install that and we're going to go back into our server and say we want to uh we need to say const cookie parser is required cookie and then we need to set this up as middleware so we're going to say app.use cookie purser all right this is i think this is all that we need so let's go test this out so we'll jump over to safari refresh the page and see what we have broken okay um okay let's see payment method options i think we're probably missing a comma yeah okay refresh the page and uh any other errors out of the catch is let's see try catch uh try unexpected identifier app crashed cry accept catch should be a catch right do we have all of our [Music] oh maybe it's down here in this one try catch oh yes okay so that is our if statement that is our try block okay oh live demos live demos okay so let's see that made it happy refresh the page all right we're back in business we are back in business okay so um chow asks do we have a similar example for persisting safari cookies with a subscription that wraps a payment intent i don't think we have a similar example however when you're using um a link payment method for subscription which is totally possible you couldn't use the same cookie persistence so that if someone comes back they have their their link account is persisted across sessions but i think what you might be asking is storing that customer's payment method detail for the subscription and when you create the subscription object and confirm its related payment intent with the payment element this should all work as expected so um the the stuff that we're going over today with persistent cookies should work exactly the same so let's go back to safari and try this out jenny oh actually there's one other thing that we need to do there's one other thing that we need to do and that is um when we're when we go to our success page which is called completion here um right now we're handling this client side which is totally valid you can fetch the uh the payment intent you can retrieve it client-side and show the details of the payment intent and again if we were to do this right like um we could go through this payment flow and show the success page again which is right now it's just rendering out this payment succeeded we're fetching the status of the payment intent client-side by using stripe.js to retrieve it but we're going to just change this a little bit in order to sort of force this cookie persistence and the way that we're going to change it is we're going to say fetch we want to fetch a retrieve payment intent with the payment intent from the um from the query params so we're going to grab the payment intents id from the query params which is here and then we're going to say um yeah this is going to be equal to payment intent id and that should give us an api call to our server which will cause a cookie to be set and persisted r.json okay and that's going to give us back a a payment intent okay so then instead of this we can say yeah we'll either get back the payment intent or the error all right so now we can refresh this page and that will result in cookieing our user if this okay so the network request that is firing off is going to our retrieve payment intent and we are getting back okay we're getting back all of the data i think what we want to do is just remove the error concept for now and we will just say const error is null just for the purposes of the demo here okay now we are seeing payment intent succeeded if we go back to this page we should see our payment flow work as expected now if we go to safari and go back to the flow we can show that our merchant domain cookie has been set successfully again the documentation for all of this is going to be available you can walk through it step by step step by step see how to successfully set the merchant domain cookie um so if we close safari and open safari back up now if we go back to localhost 3000 um we should see we did not see um jenny rosen logged back in jenny got rows in example.com so um that could be a number of different things ah we're missing okay we're missing something on server 104. all right nope server uh okay i have a feeling that this token is not actually being created console.log token you might also be wondering like is it possible to pre-fill this data with payment methods that your customers have used already before and that is also totally totally possible the way that we enable this is through an ephemeral key plus the customer object which we can do again on the server side using the id of the customer and setting up the payment intent in a certain way so i think um we have we should have a token here so we will console log the token when the intent status is successful so let's go through the payment flow we are in safari we're going to say okay pay today and redirect it to our completion page that should have logged the token and we see the token here so that token should now be available or persisted and when we uh create the payment intent it should indeed pass this cookie uh back to the uh to the newly created payment intent ah and it does okay so we are logged in and we're able to go through the process again in safari so we are running a little bit short on time but what i wanted to do was quickly show you the documentation for the the customer saved merchant the customer saved data so the way that it works is you create an ephemeral key an ephemeral key is something that's more common with mobile applications but we're going to bring it to the web and use it more in the web for things like the issuing card element for showing some customer data this is one of the ways that we can enable a temporary access to some customer data on the client because we're assuming or we're expecting that this customer is fully authenticated because you've passed their customer id in here when you're creating the ephemeral key and on the client we pass back this customer object customer options object with the ephemeral key secret and we can use the customer options when we initialize the elements provider so the same place that we pass in the client secret we now pass in the customer options all right i think that's a pretty good spot to wind down so diana let's um yeah let's see if there's any more questions and then if not i think we can call it a wrap i think it's like it's very exciting um i was pumped to hear that it gives you 4x faster checkout time are there any other metrics that we're able to share publicly around like conversions or yeah things that yeah might i mean obviously folks are going to want to make the the checkout process smoother for their users but what else like yeah yeah i think one other really powerful one is that um link customers check out four times more frequently so not only are they actually checking out four times faster but you're actually getting um an increase in the number of conversions that you're having as well with a linked customer so they actually they actually transact four times more frequently which i think is also extremely powerful uh which is very very cool yeah so this this lincoln elements beta is running for a certain number of weeks or how long is the beta yep um so to participate in the beta we're asking um businesses to integrate link by the end of the month so call it may 31st um yeah so that's the deadline that we're asking people to participate in the theta for um so i think there's probably about three more weeks for that um yeah so we have we have a couple more weeks which um yeah hopefully is good fantastic we've got one final question here that we'll wrap with before we end the day and it's um it says uh just a general elements question any best practice for css styling elements when a browser page can be dark or regular mode based on the time of day or the ambient lighting uh let's see i think so css is definitely not my definitely not in my wheelhouse but um we will bring this back to the team and try to write some write some documentation around best practices i do know that we have within the appearance api there is a way to specify different um different logos based on or different icons and different sort of like colors based on whether or not the browser is in dark mode or light mode and so yeah that's something to take a look at but uh thanks so much for the question thanks again very much for your time and your attention and we will have episodes for stripe developer office hours we're shooting for a bi-weekly basis there's also a devchat series that runs every wednesday in the um the evening time for it's like 5 p.m eastern so look forward to those we have some really exciting ones coming up soon for jam stack there's some other really interesting announcements that are coming out soon we've also got some really great no code com content coming out there's some really cool betas that i'm just like i'm so excited to tell i i'm bursting at the seams i can't i can't wait for some of this no code stuff to come out for you no code founders that are online and watching so stay tuned to the at stripe dev on twitter to the strike developers youtube channel thanks again so much for watching we really appreciate it and we'll see you in the next one thanks everyone see you later see ya [Music] bye

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