Panasonic CFVDW07CRFM CFVDW07CRFM User Guide - Page 31

How to Take Sharp Fingerprint Images The sensor used in the fingerprint scanner creates an image based on the way in which the sensor comes in contact with the finger. The image is affected by the condition of the skin on the finger, and by the pressure applied by the finger on the sensor. At low temperatures, the finger tends to be dry, and the image comes out very light, while at higher temperatures the finger tends to be moist, so the image is darker. Furthermore, if the finger is dry, it may take longer to create the fingerprint image. If the fingerprint is too light or dark, refer to the following. The fingerprint image is very light It will require longer time to obtain the image (5 seconds or more) Is finger too dry, or is skin of finger rough or chapped? Breath on the finger to warm it and provide moisture, then press down firmly on the sensor. The fingerprint image is dark and smudged Is there perspiration on finger, or is finger wet? Wipe finger with a handkerchief or tissue, and touch the sensor more lightly. 31