Patent Application For Touch ID Shows How Apple Secures Fingerprint Information On iPhone 5s

Patent Application For Touch ID Shows How Apple Secures Fingerprint Information On iPhone 5s: A new patent application published by the USPTO (via MacRumors) shows some more detail around Apple’s use of Touch ID and the fingerprint sensor in the iPhone 5s. Apple has been mostly quiet about the specifics of how the tech works, while generally asserting that the fingerprint information never goes to a server, and only remains on the phone itself in a “secure enclave” which isn’t accessible by the rest of the system or third-party devs.

The patent describes a system that not only siloes data on the Touch ID “enclave” section of the A7 processor, but that also encrypts the fingerprint maps registered on the device to make it that much more difficult for any thieves to even attempt to pull the data off in any kind of usable form. The enclave is a one-way street, too: the system can check new fingerprints against the stored ones, but there’s no way to check or call up the stored fingerprints at all for external examination once they’re registered.