Book Image

Apple Pay Essentials

By : Ernest Bruce
Book Image

Apple Pay Essentials

By: Ernest Bruce

Overview of this book

Apple Pay, one of the most talked about offerings of the latest iOS 9 release, is a digital wallet and electronic payment system developed by Apple Inc. Paying in stores or within apps has never been easier or safer. Gone are the days of searching for your wallet, and the wasted moments finding the right card! Now you can use your credit cards and rewards cards with just a touch. It allows payment to merchants, using Near field Communication (NFC), and within iOS apps. Implementing Apple Pay within apps for payment is a bit tricky, but our book solves this problem for you. Whether you are a brand new iOS app developer or a seasoned expert, this book arms you with necessary skills to successfully implement Apple Pay in your online-payment workflow. Whether you are a brand new iOS app developer or a seasoned expert, this book arms you with the necessary skills to successfully implement Apple Pay. We start off by teaching you how to obtain the certificates necessary to encrypt customers’ payment information. We will use Xcode and Objective C for the interface and Node.js for server side code. You will then learn how to determine whether the customer can use Apple Pay, and how to create payment requests. You will come to grips with designing a payment-processor program to interact with the payment gateway. Finally, we take a look at a business-focused view of Apple Pay protocols and classes. By the end of this book, you will be able to build a fully functional Apple Pay-integrated iOS app
Table of Contents (13 chapters)

Actors and operations in the authorization workflow

The payment authorization workflow is a process by which the user confirms or enters the shipping information you provide or request in the payment sheet and authorizes the app to submit the payment request for approval by the issuing bank of the payment card specified in the payment request. The user may also change the payment card to use to fund the payment request, in which case you might need to update the payment request's summary items (by adding surcharges for specific cards, for example).

The payment authorization workflow starts when your app presents the payment sheet (a PKPaymentAuthorizationViewController object) and ends with the user authorizing the payment request. (The user may cancel the transaction by tapping the Cancel button on the payment sheet.)

This diagram depicts the actors and operations that are part of the payment authorization workflow:

The workflow comprises four steps, as follows:

  1. The app presents the payment...