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Wipe the prism surface with a microfiber cloth. Avoid harsh chemicals or abrasive materials that scratch the glass.

If the administrator password has been forgotten, physical access to the device may be required for password recovery. Options include: zkteco authentication failure solution best

An authentication failure means the device terminal cannot match the presented biometric data (fingerprint, face, badge, or PIN) with the templates stored in its database. This issue usually stems from three main areas: data mismatches, hardware issues, or software communication sync errors. Phase 1: Immediate Troubleshooting for Users Wipe the prism surface with a microfiber cloth

Fingerprint scanners accumulate grease, and face cameras get dusty. Options include: An authentication failure means the device

For users with worn fingerprints (e.g., manual laborers), assign a PIN code or an RFID proximity card alongside their biometric profile.

Every 6 months, export all user data, factory reset the device, and re-upload. This removes algorithm fragmentation.

Sometimes the device memory becomes fragmented or corrupted, especially if you frequently upload/download user data.