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)

Clean all biometric sensors once a week using approved anti-static wipes. zkteco authentication failure solution best

Avoid direct sunlight or extreme backlight on the machine. Low light environments can also cause failures. Enter the device menu ( M/OK ), go

He pointed at the device’s mounting. The wall behind it had a fresh, faint water stain from the AC duct above. go to User Mgt