The iPhone 5S fingerprint sensor is officially confirmed. Apple just took the wraps off “Touch ID,” a capacitive sensor that is built into the home button.
Like the rumors have said all along, Touch ID is embedded into the device’s home button, which is now made of sapphire crystal. Apple’s Phil Schiller described the fingerprint as the “key you have with you everywhere you go” during the keynote.
Touch ID will be used for authenticating not only device passwords, but iTunes Store purchases with the user’s Apple ID.