An incorrect time on the device is a frequent cause of authentication or attendance logging issues. The steps to set the time correctly are:
ZKTeco devices support multiple verification modes, including fingerprint-only authentication, password-only verification, card swiping, facial recognition, and combined verification modes that require two or more factors. Each mode has its own potential failure points, which we will address individually in the following sections.
For systems linked with ZKTime, ZKAccess, or MiHCM, authentication failures often result from communication issues. zkteco authentication failure solution best
Take time during initial registration. Ensure the fingerprint sensor shows a high-quality score (above 70%) before saving the profile.
To stop authentication failures from happening again, implement these best practices: An incorrect time on the device is a
Connect the device to your PC and use the ZKTeco management software (e.g., ZKAccess 3.5/7.0 or ZKTime 5.0/8.0). You can "Clear Administrator" by pushing the user data to the device.
: Power off the ZKTeco machine, insert the USB drive into its physical USB host port, and power the device back on. For systems linked with ZKTime, ZKAccess, or MiHCM,
A power fluctuation can cause the device to hang, requiring a hard reboot.
If individual devices are clear of physical faults, the issue likely resides within your central management console. Step 1: Clear Device Memory
: For many standalone devices like the F18, you can reset the administrator password by dismantling the device and pressing the Tamper Switch
An authentication failure on a ZKTeco device occurs when a user's biometric data (fingerprint or face) or access credentials are presented but not accepted by the system. This results in access being denied or attendance not being recorded, and it can happen for a wide variety of reasons. This guide will help you navigate the most common causes and their solutions.