Toshiba Satellite U505-S2940 User Guide - Page 172

172 Utilities Fingerprint Authentication Utility ❖ 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 (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 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. ❖ The fingerprint for each finger is different and unique. Please ensure that only the registered or enrolled fingerprint or fingerprints are used for identification. ❖ Check sliding position (see illustration below). (Sample Illustration) Aligning the finger on the reader Fingerprint reader limitations ❖ The fingerprint reader compares and analyzes the unique characteristics in a fingerprint. However, there may be instances where certain users are unable to register their fingerprints due to insufficient unique characteristics in their fingerprints. ❖ A warning message will be displayed when recognition is abnormal or recognition is not successful within a fixed duration.