# Adding Apple Pay to my Mobile Website

By: Alfred Indigo
Published: 2023-03-14

Seamlessly integrate Apple Pay into your mobile website for a fast, secure, and user-friendly checkout experience. Enhance your payment portal today.

We recently went through the process of integrating the Apple Pay experiene on a headless website and wanted to share the steps and our experience along the way. 

As always, should you just need help, just say [Hello](https://www.causeofakind.com/contact "Hello"). 

Integrating Apple Pay into your mobile website payment portal can provide a seamless and secure checkout experience for your customers. Here's a step-by-step guide to help you get started:

### 1. **Prerequisites**
   - Ensure your website uses HTTPS, as Apple Pay requires a secure connection.
   - You need an Apple Developer account to access Apple Pay's features.
   - Verify that your payment service provider (PSP) supports Apple Pay (many PSPs, such as Stripe, Braintree, and Adyen, offer built-in support for Apple Pay).

### 2. **Register for Apple Pay**
   - **Enroll in the Apple Developer Program**: You’ll need to have an Apple Developer account to set up Apple Pay.
   - **Register a Merchant ID**:
     1. Log in to your [Apple Developer Account](https://developer.apple.com/).
     2. Go to the “Certificates, Identifiers & Profiles” section.
     3. Create a new Merchant ID in the "Identifiers" section.

### 3. **Set Up Payment Processing**
   - Choose a PSP that supports Apple Pay or configure your own payment processor. Popular PSPs like Stripe, Square, or Adyen make integration easy by offering Apple Pay SDKs.
   - Configure your payment gateway to accept payments via Apple Pay.

### 4. **Configure Apple Pay on Your Website**
   - **Create an Apple Pay Session**: You will need to create a session object on your website to handle payments securely. This typically involves setting up the `ApplePaySession` JavaScript API.

     Example:

     ```javascript
     if (window.ApplePaySession) {
       var merchantIdentifier = 'merchant.com.example';
       var promise = ApplePaySession.canMakePaymentsWithActiveCard(merchantIdentifier);
       promise.then(function (canMakePayments) {
         if (canMakePayments) {
           // Show the Apple Pay button
         }
       });
     }
     ```

   - **Display the Apple Pay Button**: Once the user has confirmed that Apple Pay is available, dynamically show the Apple Pay button on your payment page.

     Example HTML:

     ```html
     <button id="apple-pay-button">Buy with Apple Pay</button>
     ```

### 5. **Handle the Payment Process**
   - **Create a New Apple Pay Session**:
     When a user clicks the Apple Pay button, start a session:

     ```javascript
     const paymentRequest = {
       countryCode: 'US',
       currencyCode: 'USD',
       total: {
         label: 'Your Business Name',
         amount: '49.99',
       },
       supportedNetworks: ['visa', 'masterCard', 'amex'],
       merchantCapabilities: ['supports3DS'],
     };

     const session = new ApplePaySession(1, paymentRequest);
     ```

   - **Validate the Merchant**:
     You need to validate the merchant with Apple's servers. This process is required to ensure that the request comes from an authorized merchant.

     ```javascript
     session.onvalidatemerchant = (event) => {
       const validationURL = event.validationURL;
       // Call your server to request validation from Apple's servers
     };
     ```

   - **Complete the Payment**:
     Once the user confirms the payment, process it through your payment gateway:

     ```javascript
     session.onpaymentauthorized = (event) => {
       const payment = event.payment;
       // Process the payment with your payment provider
     };
     ```

### 6. **Test the Integration**
   - Use Apple’s [Sandbox Environment](https://developer.apple.com/documentation/apple_pay_on_the_web/setting_up_a_sandbox_environment) for testing before launching on your live site.
   - Ensure you test different devices and scenarios (success, failure, etc.).

### 7. **Deploy to Production**
   - After successfully testing your integration, deploy the code to your production environment.
   - Monitor transactions and gather feedback to ensure everything works smoothly.

### Notes:
- Make sure you follow Apple’s [Human Interface Guidelines for Apple Pay](https://developer.apple.com/design/human-interface-guidelines/technologies/apple-pay/overview/) to ensure a user-friendly checkout process.

Would you like help with specific PSPs, or do you already have one in place for Apple Pay integration?

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