Toshiba Z930-S9311 ユーザーズマニュアル

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Clean the reader with a lint-free cloth. Do not use detergent to 
clean the reader.

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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.

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Soaked or swollen finger (e.g., after taking bath)

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Injured finger

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Wet finger

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Soiled or oily finger

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Extremely dry skin condition on finger

Observe the following to improve the fingerprint recognition 
success rate.

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Enroll two or more fingers.

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Enroll additional fingers if recognition failure occurs often 
using enrolled fingers.

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Check your finger condition. Changed conditions, such as 
injured, rough, extremely dry, wet, soiled, dirty, oily, soaked or 
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.

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The fingerprint for each finger is different and unique. Please 
ensure that only the registered or enrolled fingerprint or 
fingerprints are used for identification.

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Check sliding position (see illustration below).