As I recall, the T2 is essentially a gimped A10. FaceID relies partially on the neural engine in the A11 and later to retrain its image of you and continue to w

As I recall, the T2 is essentially a gimped A10. FaceID relies partially on the neural engine in the A11 and later to retrain its image of you and continue to work reliably, even when your face undergoes subtle changes. Or essentially, until they release an updated T series chip which includes the neural engine, which probably won’t be until Mac OS X can take advantage of it, it is TouchID or nothing as far as biometric auth goes for Macs.