https://www.macrumors.com/2021/01/29/iphone-13-in-display-fingerprint-sensor-optical/
Apple is working on in-screen fingerprint technology for the iPhone 13, a feature that would be available right alongside Face ID as a secondary biometric...
appleiphonecouldfeatureoptical
https://www.biometricupdate.com/201501/vkansee-technology-develops-anti-spoof-optical-fingerprint-sensor
The technology enhances Apple TouchID resolution so that it becomes nearly impossible to spoof a fingerprint with a mold in order to unlock the phone.
optical fingerprint sensortechnologydevelopsantispoof