User’s Manual 3-10
Points to note about the Fingerprint Sensor
Please be aware of the following considerations when using the fingerprint
sensor. A failure to follow these guidelines might result in damage to the
sensor, sensor failure, fingerprint recognition problems or a lower
fingerprint 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 the
sensor surface dry and free from water vapor.
■ Do not touch the sensor with a soiled or dirty finger as minute foreign
particles of dust and dirt may scratch it.
■ Do not paste stickers or write on the sensor.
■ Do not touch the sensor with a finger or any other object which may
have a build-up of static electricity on it.
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.
■ Avoid the following finger conditions for enrollment or recognition as
they may result in fingerprint enrollment errors or a drop in the
fingerprint recognition success rate
■ Soaked or swollen finger, for example as may occur after taking a
bath.
■ Injured finger
■ Wet finger
■ Soiled or oily finger
■ Extremely dry skin condition on finger
Observe the following to improve the fingerprint recognition success rate.
■ Enroll two or more fingers.
■ Enroll additional fingers if a recognition failure often occurs when using
already enrolled fingers.
■ Check the condition of your finger - any conditions which have changed
since enrollment, such as injury, rough skin, and extremely dry, wet,
soiled, dirty, oily, soaked or swollen fingers, may lower the recognition
■ There is a possibility of authentication failures if the finger is swiped too
quickly or too slowly - follow any on-screen instructions to adjust the
speed used during the swipe process.