IR and visible light cameras get blinded by sun.
: 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 zkteco authentication failure solution best
Furthermore, the hardware issue may be physiological. Optical fingerprint sensors can struggle with users who have worn-out fingerprints—often the elderly or manual laborers. In such cases, the best solution is hardware diversification. Modern ZKTeco terminals often support multimodal authentication. Shifting affected users from fingerprint verification to facial recognition or RFID card access bypasses the hardware limitation of the fingerprint sensor, ensuring that authentication failure does not equate to operational paralysis. IR and visible light cameras get blinded by sun
ZKTeco devices use various authentication methods, including fingerprint, facial recognition, RFID cards, and passwords. While these methods offer a high level of security, authentication failures can occur due to various reasons, such as: Optical fingerprint sensors can struggle with users who
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Navigate to Menu > Autotest to run internal diagnostics on the sensor and screen functionality. 🌐 Network & Connection Stability
Why this works: ZKTeco’s flash memory fragments over time. A data purge realigns template pointers.
