Oppo smartphones with fingerprint sensor not only offer another unlock method, but also allow faster payment processes and other authentications. It can also be used for app locking or private safe. Under ColorOS, multiple fingerprints can be added, even from different people.

Note: To add a fingerprint, the screen lock must be set up.

Android 10 | ColorOS 7.0
Step 1:  Open the  Settings
Step 2:  Tap on  Fingerprint, face & password
Step 3:  Tap on  Add fingerprint
Step 4:  Enter your current  Password/PIN/Pattern
  1. Open the Settings
  2. Tap on Fingerprint, face & password
  3. Tap on Add fingerprint
  4. Enter your current Password/PIN/Pattern

Oppo Instructions