Synel SY-760, User Manual

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Reasons for Low Scores
Some reasons for poor sampling results are listed below:
Possible Reason Correction
Finger movement while sampling Instruct the user to remain still while Veriprint is sampling.
Finger not positioned properly With the fingertip raised, position the finger so that the Ridge-
Lock rests comfortably within the first indentation of the finger.
Next, lower the finger onto the sensor and apply very moderate
pressure.
User might be pressing too hard Too much pressure on the sensor will blur the fingerprint
ridges. Allow the user to apply gentle pressure while sampling.
User might not be pressing hard
enough You must apply gentle pressure when enrolling. The fingerprint
should lay flat upon the sensor surface.
Finger too moist or wet If the user washed their hands, but failed to completely dry the
finger that is sampled, excessive moisture may cause the
sample to be more difficult to obtain. Dry wet or moist fingers
before sampling.
Finger too dry Depending upon the geographical area, the season, and the
skin type of the user, their fingerprint might be excessively
rough or dry. Excessively dry skin may affect the sample
quality. Try applying skin moisturizer a few minutes before
enrolling to improve image quality.