LG cricket LM-Q720CS User Manual page 17

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Precautions for fingerprint recognition
Fingerprint recognition accuracy may decrease due to a number of
reasons. To maximize the recognition accuracy, check the following before
using the device.
Ensure that the fingerprint sensor is not damaged by a metallic object,
such as coin or key.
When water, dust or other foreign substance is on the fingerprint
sensor or your finger, the fingerprint registration or recognition may
not work. Clean and dry your finger before using the fingerprint sensor.
A fingerprint may not be recognized properly if the surface of your
finger has a scar or is not smooth due to being soaked in water.
If you bend your finger or use the fingertip only, your fingerprint may
not be recognized. Make sure that your finger covers the entire surface
of the fingerprint sensor.
Scan only one finger for each registration. Scanning more than one
finger may affect fingerprint registration and recognition.
The device may generate static electricity if the surrounding air is dry.
If the surrounding air is dry, avoid scanning fingerprints, or touch a
metallic object, such as coin or key, to remove static electricity before
scanning fingerprints.
Registering fingerprints
You can register and save your fingerprint on the device to use fingerprint
identification.
1
On the home screen, tap Settings Lock screen & security
Fingerprints.
This feature is available when the screen lock is set.
-
Lock the device with a pattern, PIN or password.
If the screen lock is not set, configure the lock screen by following the
on-screen instructions. See
Custom-designed Features
Setting a screen lock
for details.
15

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