Perform a factory reset on the physical machine if necessary ( Main Menu > System > Reset ).
: If an individual user consistently fails, delete their old profile and re-enroll their fingerprint or face. Admin Password Resets
Blinding sunlight interferes with the infrared sensors of facial recognition terminals. Shield the device or adjust the installation location away from direct windows. 2. Update and Optimize User Enrolments zkteco authentication failure solution best
For optimal long-term reliability, ZKTeco advises enrolling at least two different fingers per user. This practice provides a backup in case of injury, cuts, or temporary skin conditions affecting one finger. Ideally, every finger on each hand should be enrolled, allowing users to authenticate with whichever finger is most convenient at any given time.
If you manage more than 100 users, invest in ZKTeco’s ZKAccess 3.5 software . It allows you to monitor "Quality Scores" for each fingerprint enrollment. If a user’s score is below 60 during enrollment, force them to re-scan immediately before failure starts. Perform a factory reset on the physical machine
If you encounter an "Authentication Failure" today, follow this order:
: Authentication often fails if the device cannot communicate through specific ports. : Locate the app.config file in the device's directory and ensure the Telnet port Clear Administrator Privileges : If you are locked out of the device's menu, use the ZKTeco Machine Manager Password Reset Tool Time-Based Method Shield the device or adjust the installation location
ZKTeco has announced that recent system issues were resolved by significant firmware updates. Check your current firmware version via the device menu.