Why does the device's FingerPrint scanner scan erratically when no one accessed the device?

One possible reason for this issue is that the fingerprint scanner surface is dirty and requires cleaning. Please check whether there is any residue left on the fingerprint lens. Sometimes a dirty fingerprint can cause such behavior.

Another possible reason is interference from environmental lighting at the device’s fingerprint scanner, which may cause the scanner to auto‑trigger and attempt to detect a finger. See the example below.

Proposes solutions:

A) For devices running Firmware version 2247 or newer, change the “Fingerprint Detection Threshold” value from 300 to 1,000 under the device’s [Terminal Setup] webpage settings.

This adjustment allows the client to configure the sensitivity of the fingerprint scanner according to different environments. After making the change, click the “Submit” button to apply the settings. See the screenshot below as an example.

B) Also, change the “Fingerprint Detection Method” from Fast to Normal. Once done, click the “Submit” button to apply the changes.

See the attached file for more information.

Attachments:
fingerprint_settings.jpg