In order to unlock the LG device using fingerprint or to use other verification functions, a fingerprint must be added to the system. Any number of fingerprints can be added to the LG device, even from different people.

Android 9 (LG UX 9.0)
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Lock screen & security
Step 4:  Tap on  Fingerprints
Step 5:  Tap on  Next
Step 6:  Enter  Password / PIN / Pattern
Step 7:  Touch the  fingerprint sensor  with your desired finger
Step 8:  Confirm with  OK
  1. Open the Settings
  2. Tap on General
  3. Tap on Lock screen & security
  4. Tap on Fingerprints
  5. Tap on Next
  6. Enter Password/PIN/Pattern
  7. Touch the fingerprint sensor with your desired finger
  8. Confirm with OK

LG Instructions
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