ZKTeco White LCD Series, Руководство пользователя

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3. Enrollment and Verification
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fingerprint verification quality, the following hints appear.
Table: Common reason for enrollment failure or bad quality
Trouble Solution
Fingerprints is
too dry or dirty
Solve the dry problem that rubs the dry finger with palm.
If the fingerprint is dry, you should adopt the way of wetting
up the finger, such as brow air over finger.
Have no enough
to bring pressure
The user should place a finger firmly and flat on the sensor
surface.
How to select
the finger?
Recommend to left or right index or middle finger.
Use fingerprints of good quality, without worn or injury.
The user usually selects the forefinger, if it was of a poor
quality, you will be recommended to middle finger or ring
finger.
If the user’s finger is small, you will select the thumb.
If the user needs to enroll more fingerprints, select the finger
not easy to be injured or worn, as the ring finger.
How to place the
finger?
Place your finger firmly and cover most of the sensor
surface.
The fingerprint does not touch upright on the sensor surface.
Do not touch the finger too fast. Do not slide the finger on
the sensor surface.
The effect of the
fingerprint
pattern change
For a user with worn or injury finger, the identification can
be affected.
If the finger quality was poor, you need enroll other
fingerprints or select password to verify.
Others
However, few people’s fingerprint quality is too poor to
verify, please use ID & fingerprint verification, and the
Threshold can be reduced or use password verification.