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Touch ID is a fingerprint recognition feature, designed and released by Apple Inc., and is currently available on iPhones since iPhone 5S, as well as iPads since iPad Air 2 and the MacBook Pro. In 2015, Apple introduced the faster second generation Touch ID beginning with the iPhone 6S, and later to the Macbook Pro in 2016.

iPhone 5S home button with integrated Touch ID feature

Touch ID is a fingerprint recognition feature, designed and released by Apple Inc., and is currently available on iPhones since iPhone 5S, as well as iPads since iPad Air 2 and the MacBook Pro. In 2015, Apple introduced the faster second generation Touch ID beginning with the iPhone 6S, and later to the Macbook Pro in 2016.

Touch ID allows users to unlock Apple devices, make purchases in the various Apple digital media stores (the iTunes Store, the App Store, and the iBookstore), and authenticate Apple Pay online or in apps. On announcing the feature, Apple stated that fingerprint information is stored locally in a secure enclave on the Apple A7 and later chips, and is not stored in the cloud, making it very difficult for external access.