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crwdns2944351:0crwdnd2944351:0MacBook Air 13" Retina Display 2019 Touch ID Sensor Replacementcrwdnd2944351:0crwdne2944351:0

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Introduction
Use this guide to replace the Touch ID sensor in a 2019 MacBook Air.
'''Note that Touch ID will not function after replacing the Touch ID sensor.''' The MacBook’s original Touch ID sensor is uniquely paired to the T2 chip on the logic board at the factory—and without Apple’s proprietary calibration process, even a genuine replacement Touch ID sensor from another MacBook Air won’t work.
If you replace the Touch ID sensor, you must install a paired logic board to retain Touch ID functionality.