Those using their Discover Cards with Apple Pay will continue to have protection like $0 Fraud Liability Guarantee. This means that cardholders will never be responsible to pay for unauthorized purchases made with the card. And Apple Pay doesn’t use or store your actual card number. Besides the unique Device Account Number that is assigned to your card, encrypted and securely stored on your iPhone, each transaction uses a one-time unique dynamic security code.
Apple Pay works with the Apple iPhone 6, Apple iPhone 6 Plus, Apple iPhone 6s and Apple iPhone 6s Plus, along with the Apple Watch.