6
SCANNING
FINGER CONDITIONS
VERY MOIST FINGERS
• Result: Images too dark, poorly defined. Indicates too much
moisture on the fingers.
• Solution: Dry the fingers with a towel or cloth before
fingerprint capture.
• The resultant images will be lighter and the NFIQ quality scores
will improve.
VERY DRY FINGERS
• Result: Images take several seconds to appear or contrast appears
lighter than desired.
• Solution: Rub a small amount of moisturizer on the fingertips.
(Do not slather.)
• The resultant images will be darker and the NFIQ quality scores
will improve.
• Gentle or light contact with the plate is recommended in scanning.
Placing extra pressure on the hand is not recommended.
• Avoid using hand sanitizers, alcohol based lotions, and baby wipes
prior to scanning.
BEST PRACTICES
• Never put a wet hand on the scanner i.e., just washed and not
thoroughly dried, holding a bottle of liquid that leaves condensation
on your hand. Hands should be wiped dry.
Dry Fingerprints
Normal Fingerprints
Wet Fingerprints
Summary of Contents for SH11000-000
Page 1: ...USER MANUAL...
