Apple explains Touch ID in depth with latest iOS security document

In the latest release of its iOS Security document spotted by TechCrunch, Apple offers a number of details about the function and processes of the Touch ID fingerprint recognition system offered on its iPhone 5s. The document describes the Secure Enclave, “a coprocessor fabricated in the Apple A7 chip,” which manages safely matching active fingerprints read by Touch ID against registered fingerprints saved by the user. While much of how Touch ID behaves was revealed last fall when the iPhone 5s was introduced and through experience, the white page does list more specifics than have previously been made available…

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