User's Guide

30
Trouble Guide
Face is not recognized.
- Face may not be recognized in strong backlight conditions.
- In backlight conditions, move your face closer to or away from
the device and try the authentication again.
- Check if face is covered by mask or hat.
- For authentication, eyebrows and mouth must be recognized.
Firmware update failure.
- If updating through the Manager continuously fails, update
using a USB.
- If the version name on the completion popup starts with %1
after the device is rebooted, update again using USB.