Sept. 9 was Apple's big day. The tech giant introduced its new iPhone and long-awaited Watch. While both of those products may be big news, what's inside them — specifically Apple Pay — may prove to be the biggest headline of all. Apple Pay promises to give consumers a safe, convenient way to make payments, no credit cards needed. With Apple's new iPhone 6 model, a shopper will be able to make a payment without the need to wake the screen display or open an app.