Poco F1 comes with Fingerprint Scanner on the Rear. It also comes with IR Face Unlock. Here's How to Setup Fingerprint Scanner, face Unlock on Poco F1 and Working.

Go to Settings - Lock Screen & Password- Add Fingerprint- enroll fingerprint Scanner. It can be used to unlock Screen, App Lock, Fingerprint Payment. You can add up to 5 Fingerprints. It can be also used to capture photos. Fingerprint Scanner works fast.