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Avoid swiping with the finger stiff or pressed-on too hard:
Fingerprint reading may fail if the center of the fingerprint is not
touching on the sensor, or when finger is swiped while pressing hard.
Make sure that the center of the fingerprint is touching the sensor
before swiping.
Confirm the center of the fingerprint whirl before swiping:
The thumb's fingerprint has a bigger whirl, which is prone to
misalignment and distortions. This will cause difficulty in registration
and a drop in the authentication success rate. Always confirm the
center of the fingerprint whirl so that it is swiped along the centerline of
the sensor.
When fingerprint reading is not successful:
There is a possibility of authentication failures if the finger is swiped too
quickly or too slowly. Follow the onscreen instructions to adjust the
speed of the swipe.
Points to note about the fingerprint sensor
Failure to follow these guidelines might result in (1) damage to the sensor
or cause sensor failure, (2) finger recognition problems, or lower finger
recognition success rate.
Do not scratch or poke the sensor with your nails or any hard or sharp
objects.
Do not press the sensor strongly.
Do not touch the sensor with a wet finger or any wet objects. Keep
sensor surface dry and free of water vapor.
Do not touch the sensor with a soiled or dirty finger. Minute foreign
particles on a soiled or dirty finger may scratch the sensor.
Do not paste stickers or write on the sensor.
Do not touch the sensor with a finger or any object with built-up static
electricity.
Observe the following before you place your finger on the sensor whether
for fingerprint enrollment/registration or recognition.
Wash and dry your hands thoroughly.
Remove static electricity from your fingers by touching any metal
surface. Static electricity is a common cause of sensor failures,
especially when the weather is dry.
Clean the sensor with a lint-free cloth. Do not use detergent or any
other chemicals to clean the sensor.
User's Manual
A300/A300D
4-3
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