User's Manual

AY-B9250BT User Guide 47
1: N LEVEL 3.7.1.2.
It is the authentication level used when it tries 1: N fingerprint authentication.
LFD LEVEL 3.7.1.3.
It sets LFD LEVEL to prevent the duress fingerprint.
If setting LFD LEVEL higher and higher, the ability to prevent the input of duress fingerprint
produced by rubber, paper, film, and silicon etc. reinforces but too dry fingerprint cannot be
input well. Also the authentication speed can be slow.
AUTH TIME 3.7.1.4.
It means the maximum time to process 1: N authentication. If the authentication time
exceeds, authentication timeout occurs.
The authentication time is 2 to 10 seconds, the default is 5
seconds.