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5. If your finger is too dry, make it a little wet or touch the forehead to increase
oily of the finger, press a little hard on scanner.（the dry finger can cause the finger
image not clear.
6. Avoiding the callus, peeling or injury of the finger to ensure the register and
identification successful.
7. You’d better register the thumb first, and then index finger or middle finger to
increase the precision.
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