Zkteco Authentication Failure Solution Best

Enter the device menu ( M/OK ), go to User Mgt , and check that the specific user's Verification Mode is set to "Group Mode" or the specific method they are actually using. 5. Environment & Lighting (Facial Recognition)

: If cleaning doesn't work, delete and re-register the problematic user's biometric data. Sensitivity Settings zkteco authentication failure solution best

Most authentication failures are caused by physical interference. Enter the device menu ( M/OK ), go