What you don’t see on the backside is a cutout for Touch ID that we saw on some earlier leaks. Has Apple really managed to integrate Touch ID into the display assembly? Only time will tell. If the claimed diagram is anything to go by, however, there will be no Touch ID on the back.
At any rate, we’re looking at three possible scenarios here.
A) Apple has found a way to build an in-screen fingerprint reader on mass scale; B) iPhone 8 will have a fingerprint reader built into its elongated power button on the right side; and C) there will be no Touch ID on iPhone 8 because rumored 3D sensors along with vertical-cavity surface-emitting laser technology from Lumentum will enable advanced and accurate biometric authentication, even in low-light situations.