Toshiba SATELLITE U400 - Manual (Page 64)

User’s Manual 4-3
Operating Basics
How to swipe the finger
Using the following steps when swiping fingers for fingerprint registration or
authentication will help to minimize authentication failures:
1. Align the first joint of the finger to the center of the sensor. Lightly touch
the sensor and swipe finger levelly towards you.
2. While lightly touching the sensor, swipe the finger towards you until the
sensor surface becomes visible.
3. Ensure the center of the fingerprint is on the sensor when swiping the
finger.
Slide the finger over the recognition sensor
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.
■ Avoid swiping with the finger stiff or pressing 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.