The first time you use your Apple Watch to pay for something feels almost like science fiction: You activate Apple Pay, move your wrist close to a payment terminal, and then…well, that’s it. You’re done. “Frictionless” is a perfect description. It’s also extremely safe. Instead of handing a credit card number over to be stored in a merchant’s database, Apple Pay sends a token that matches up with the card you set up; even if the data were to be intercepted, it’s useless to an attacker.
The Wallet app, where your credit card data is stored, is also a convenient holding area for items that use barcodes for transactions, such as store loyalty cards and tickets for flights, movies, baseball games, and more.