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3/ Apple is probably working on a solution to move it under display. Left: under display TouchID patent (Apple) Right: Touch ID original patentpic.twitter.com/4eWbpHgLX0
4/ Internally, during its setup, the sensor captures various pictures of the finger, helping the user exposing each part of the finger.pic.twitter.com/HpZmpKFmMv
5/ pictures are then stored and used to compare the sensor’s input during an unlock tentative (or any other operation that requires and supports this authentication method). Eventually it will find a match and update the stored informations to increase success rate over the time.
6/ Here is an internal application that shows the match process and the related update. TouchID has been and is nowadays a great #security feature; the sensor is uniquely paired to the device, in order to prevent hardware attacks. More soon, as well on #FaceID.pic.twitter.com/LP4G2aImgg
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