What can a user do to avoid false rejections in a fingerprint authentication system?
The finger should be clean (free of sticky residue and grease), and depending on the sensor, should not be too damp or too dry (breathe on it!). The finger should always be applied on the sensor in the same manner (same position, same direction) and with uniform pressure (e.g., avoid pressing while twisting). The more finger area the sensor “sees”, the better (i.e., don’t use the finger tip!). With older stripe sensors swipe the finger even and consistently over the sensor with the correct speed (try it!) without lifting your finger. Especially stripe sensors need some practice. For that reason it may pay to repeat enrolment. If the enrolment was insufficient, normal recognition cannot be optimal!
The finger should be clean (free of sticky residue and grease),and depending on the sensor, should not be too damp or too dry (breathe on it!). The finger should always be applied on the sensor in the same manner (same position, same direction) and with uniform pressure (e.g., avoid pressing while twisting).
