Passbook is Apple's digital wallet. It collects all your tickets, boarding passes, and coupons, all in one place. With Apple Pay in the U.S., Passbook will even store your credit and debit cards. Location aware, Passbook can conveniently present appropriate cards for you right on the lock screen whenever you get close to your coffee shop or airport. Always connected, Passbook can even update your balance or gate number in real time so you always know how much you have or where you need to be. Best of all, Passbook is really easy to use!