NEC BioCripto Card, Руководство пользователя

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Section 2 Before using
2-4
2.3 Basic Usage of BioCripto Card
2.3.1 How to place your finger
In order to maintain high accuracy of BioCripto Card collation, refer to “How to place your finger correctly”.
A good example of placing the finger
(1) The thick part of the finger (center of the fingerprint) should touch the sensor.
(2) The finger should touch the sensor earth.
Sensor earth
Sensor
Note:
• The center of the fingerprint spiral usually coincides with the base of the nail. Aiming this place, position the
finger at the center of the Sensor.
Sensor earth
Sensor
• When the finger is placed on the sensor, make sure that you touch the sensor earth (2 points, the upper end
and the lower end) with the finger.
• Close the sensor guard when it is not in use. If the sensor is damaged, it may cause unit failure or degrade of
collation accuracy.
• Put the finger directly on the sensor.
• If the finger is stained with sweat or oil, wipe the fingertip with handkerchief, and then put it on the sensor.
• The sensor may get dirty due to direct contact with fingers. Please clean the sensor using the procedure in
“How to clean”.