Go to settings select Password & Security then Fingerprint Unlock after that users need to put password /pin/pattern once this is done place finger on fingerprint scanner till fingerprint is added. After that lock the device and Unlock it using a fingerprint. Five fingerprints can be added. Fingerprint Scanner on Redmi 10 Prime can be used to Unlock the device, Unlock Apps using Fingerprint Scanner. Fingerprint Scanner works fast.