Why is Apple Watch using Apple Pay different from iPhone?

As a new thing on the wrist, Apple Watch not only needs to learn a lot of gestures to use Apple Watch correctly, but also needs to learn how to use Apple Watch for mobile payment, so as to realize the legendary "brush payment". Today, let's take a look at how to install and use Apple Pay on an Apple Watch smart watch. First, open the Apple Watch app on iPhone and click Passbook &；; Apple Pay, and then add a new credit card or debit card. You can choose to use a bank card that has been registered in iTunes, or you can scan a new card again. This is an independent authorization process. Each bank card will get an independent Apple Pay number, which can be deleted on your mobile phone. All you need to do is agree to Apple's terms of service (which is necessary), then click "Next", and then verify the bank card with the SMS received on the iPhone, or you may receive a verification call. Your bank card or bank will provide different additional verification methods. The first bank card added will be set as the default card, but users can change the default bank card in the application. If your Apple Watch stores multiple bank cards, you can choose other cards as the main payment card, which is the same as the setting of iPhone. If you want to delete a bank card, click on the card, and then select Remove in the Apple Watch app. Second, how to use Apple Pay to use Apple Pay on Apple Watch is very simple. You just need to double-click the button on the side, select the credit card or debit card you want to use, and then aim the watch dial at the payment terminal. Next, the watch will vibrate and a check mark will appear on the screen for the user to confirm the payment. It is very simple, and the user does not need to enter an additional password or touch ID during the whole process. However, when you remove the watch from your wrist, Apple Watch will ask you to use password verification, or double-click the side button. If you lose your Apple Watch, you can cancel your Apple Watch payment authorization through iCloud or on your iPhone. So others can't pay with your Apple Watch. As long as the virtual bank card number is revoked, even if the Apple Watch application is offline, the payment function will be terminated. Having said that, we think that the most gratifying thing about Apple Watch's Apple Pay payment function is that Apple Watch is completely independent when paying, and it can realize mobile payment even if it is not connected to any iPhone. So far, there are more than 200 banks and credit card institutions supporting Apple Pay. Apple said that more than 2,000 banks are interested in supporting its mobile payment system for iPhone, iPad and Apple Watch.