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3. Try to keep the same direction and angle each time when placing fingers.
4. If your finger has sweat or water, please dry it and then register again. (The
wet finger can cause the finger image not clear)
5. If your finger is too dry, make it a little wet or touch the fore head to increase
oily of the finger; press with a little strength on sensor. (The dry finger can cause the
finger image not clear)
6. Avoiding the fingers with callus, peeling or injury to ensure the register and
identification successful.
7. For improving the precision of the fingerprint identification, it is better to use
the thumb, then forefinger and middle finger.