To use the system, a user needs to link his/her card in the Apple Wallet application. After that, he/she only needs to confirm the payment by using Face ID, Touch ID, or by double-clicking on the Apple Watch.
Apple Pay combines ease of use with high security. The system does not store or transfer bank card data. When a card is added to Apple Wallet, its real number is replaced with a token. The token is stored only on the user’s device, and at the time of payment, it is transferred together with a one-time code to the Demo PSP to complete the payment transaction.
Apple Pay Terms of Use
At the request of the developer company, the use of Apple Pay technology on websites and in applications is possible only if many terms are observed. These terms are set forth by Apple in its Acceptable Use Guidelines for Apple Pay on the Web, which you should adhere to when you implement Apple Pay yourself on a website or in an app.
In particular, Apple Pay is prohibited from being used to purchase adult goods, tobacco products, and virtual currency. To accept Apple Pay within the application or to independently implement Apple Pay on a website, you should register an account in Apple Developer to register an individual Merchant ID.