After using the power switch FP readers in the flip/fold devices I never want to use under screen again! With no under screen FP reader AND a flat screen, one can finally use any $4 tempered glass without issues, same as iPhone since 12!After having used the S23, I can say that it's just google's implementation of the under screen fp reader. The S23 is almost as good as the old capacitive one with the exception of the physical circle to put your finger in so you know you're in the right place.