User`s manual

Operating Basics
4-4 User’s Manual
O
PERATING
B
ASICS
❑ Do not touch the sensor with a wet finger or any wet objects. Keep sensor
surface dry and free of water vapor.
❑ Do not touch the sensor with a soiled finger. Minute foreign particles on a
soiled or dirty finger may scratch the sensor.
❑ Do not paste stickers or write on the sensor.
❑ Do not touch the sensor with a finger or any object with built-up static elec-
tricity.
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 to clean the sen-
sor.
❑ Avoid the following finger conditions for enrollment or recognition as they
may result in fingerprint enrollment errors or a drop in the fingerprint recog-
nition success rate
◆ Soaked or swollen finger (e.g. after taking 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 recognition failure occurs often using enrolled
fingers.
❑ Check your finger condition. Changed conditions, such as injured, rough,
extremely dry, wet, soiled, dirty, oily, soaked, swollen fingers, may lower the
recognition success rate. Also if the fingerprint is worn down or the finger
becomes thinner or fatter, the recognition success rate may be lowered.
❑ The fingerprint for each finger is different and unique. Please ensure that
only the registered or enrolled fingerprint or fingerprints are used for identi-
fication.
❑ Check sliding position and speed (see the drawing below).
❑ Fingerprint data is enrolled up to twenty one.