Samsung Galaxy S7 edge Instruction Manual page 33

Using fingerprint authentication
Fingerprint authentication is an authentication sliding your finger over the
fingerprint sensor.
■ Precautions for using fingerprint authentication
• This function is designed to authenticate using the characteristics
information of fingerprint image. For this reason, user with fingerprint
that does not provide enough characteristics information may not be
able to use the fingerprint authentication.
• Scanning several times with the same finger is needed to register your
fingerprint. Do not use different fingers to register.
• Authentication performance (the probability of successful fingerprint
authentication for correctly holding down your finger) depends on usage
conditions. Fingerprint registration may be difficult or the authentication
performance may decrease depending on conditions such as the hand is
dry. Taking measures according to the condition of your finger including
washing hands, wiping hands, using a different finger for fingerprint
authentication, etc. may improve the authentication performance.
• When registering or authenticating your fingerprint, align the first joint
of one of your fingers to the center of the sensor, and hold down your
finger. To prevent authentication failure due to difference in finger
positions at registration and authentication, keep your finger parallel to
the terminal as you place it.
• If you bend your finger or touching the fingerprint sensor with fingertip,
recognition may not be performed normally.
• If you hold down your finger too lightly or take it away too quickly, your
fingerprint may not be recognized correctly. Try as much as possible to
place your finger so that the center of the whorl of the fingerprint comes
to the center of the fingerprint sensor.
• Do not touch the fingerprint sensor before the lock screen appears by
pressing [Power/Screen lock key] /
sensor may fail to work.
• If fingerprint registration or authentication is started with the finger put
on the fingerprint sensor, activation may fail. Put the finger off from the
fingerprint sensor and retry the operation.
[Home key]. The fingerprint
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• Fingerprint authentication technology does not guarantee complete
identity authentication or verification. The likelihood of the fingerprint
sensor confusing two different fingerprints is very low. However, in
rare cases where separate fingerprints are very similar the sensor
may recognize them as identical. Note that DOCOMO assumes
no responsibility for any damage caused by use of the terminal or
unavailability of the terminal.
■ Usage precautions for fingerprint sensor
• The fingerprint sensor is malfunction may occur if dirt adheres to the surface
of the fingerprint sensor or your finger. Wipe any dirt with a soft cloth before
use. Also wrinkled finger with water may cause malfunction.
• Do not strike the terminal or give a hard shock. May cause failure or
damage. Do not scratch the surface of the fingerprint sensor or pick with
a pointed objected, such as a nib.
• Rubbing hard with a fingernail or hard object such as metal piece of
strap may scratch the surface of the fingerprint sensor.
• Dirt with mud etc. or scratch on the surface of the fingerprint sensor
may cause failure or damage.
• Remove the protective film attached at the time of purchase and use the
fingerprint sensor. If you use the fingerprint sensor it with the protective
film attached, it may not work normally.
• Do not attach a sticker or paint with ink etc. on the fingerprint sensor.
• Dirt of dust, sebum, etc. may make fingerprint scanning difficult or reduce
the authentication performance. Clean the surface of the fingerprint
sensor from time to time.
• When fingerprint registration or authentication fails often, clean the
surface of the fingerprint sensor. The phenomenon may be improved.
• To clean the fingerprint sensor, wipe its surface with a dry, soft and
static-free cloth. Long-period use may cause the fingerprint sensor to
get dusty, but do not try to remove the dust with a pointed object even
in such a case.
• Static electricity may cause malfunction. Before placing the finger on the
fingerprint sensor, eliminate static electricity by touching a metal object
with the hand etc. Take particular care in dry seasons such as winter.
Getting started