Toshiba Satellite A200 Series User Manual page 83

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
sensor surface dry and free of 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 built-up of up 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 to 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.
Observe the following to improve the FingerPrint recognition success rate.
Enroll two or more fingers.
Enroll additional fingers if recognition failure occurs when using already
enrolled fingers.
Check the condition of your finger - any conditions which have changed
since enrollment, 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.
As the FingerPrint for each finger is different and unique. you should
ensure that only the registered or enrolled FingerPrint or FingerPrints are
used for identification.
Check the position and speed at which you swipe your finger across the
sensor - please refer to the preceding drawing.
How to Delete the FingerPrint Data
Saved FingerPrint Data is stored in special non-volatile memory inside the
FingerPrint sensor. Therefore, if you give the computer to someone else, or
dispose of it in any way, the following process is recommended to delete
your FingerPrint information:
Satellite A200/Satellite Pro A200
Soaked or swollen finger (e.g. after taking bath)
Injured finger
Wet finger
Soiled or oily finger
Extremely dry skin condition on finger
Operating Basics
4-5