Fujitsu F-02F Instruction Manual page 132

For registration/authentication of your fingerprint, align one
of your finger to the sensor pressing parallel/vertically to it
and slide it to side as shown in the figure until it passes the
finger print sensor area. To prevent authentication failure
due to difference in finger positions at registration and
authentication, keep your finger parallel to the terminal as
you slide it.
If the sliding movement is too fast or too slow, the
fingerprint may not be correctly recognized.
Registration/authentication of fingerprint may be difficult
with your thumb as the center of the whorl of the fingerprint
may be displaced or distorted. Try as much as possible to
slide your finger so that the center of the whorl of the
fingerprint passes the center of the fingerprint sensor.
If the fingerprint is not correctly read, a warning message
appears.
If fingerprint registration or authentication is started with the
finger put on the fingerprint sensor, activation may be
unavailable. Put the finger off from the fingerprint sensor
and retry the operation.
When connecting the terminal using a USB cable to a device
which requires grounding such as a desktop PC, make sure
that the device is grounded in advance. If the connected
device is not grounded, fingerprint authentication may be
unavailable. In that case, remove the terminal from the
device and then perform fingerprint authentication.
Fingerprint authentication technology does not guarantee
complete identity authentication or verification. Note that
DOCOMO assumes no responsibility for any damage caused
by use of this product or unavailability of this product.
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Usage precautions for fingerprint sensor
Usage precautions for fingerprint sensor are as follows:
The sheet on the fingerprint sensor is a protective film to
maintain waterproofness. Do not remove or poke the film
with a pointed object such as a pen.
The fingerprint sensor is waterproof, however malfunction
may occur if water or dirt adheres to the surface of the
fingerprint sensor or your finger. Wipe any water or dirt with
a soft cloth before use. Also wrinkled finger with water may
cause malfunction.
The following conditions may cause failure or damage:
- Strike or give a hard shock
- Scratch or pick with a pointed object
- Rub hard with a fingernail or hard object such as metal
piece of strap and scratch the surface of the fingerprint
sensor
- Scratch or stain the surface of the fingerprint sensor with
soil etc.
- Cover with a sticker or paint with ink etc.
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