In a piece on the iPhone 5S, I argue that biometrics could be the latest technology to benefit from Apple’s touch:
By tying the phone’s owner to a physical identity, Apple opens up a world of possibilities around payments and authentication into third-party applications. Today, there is no way for other applications to access the sensor. But over time, the scanner could become the centerpiece for login, authentication and password management across the company’s range of devices and services.
Put another way: your new Apple ID is at your fingertips.