1: 1 Threshold: This parameter is used to set the threshold  of  matching  between  the  current fingerprint  and  the  fingerprint template  enrolled in the  device  in  the  1:1  verification  mode.  If  the similarity  between  the  current  fingerprint  and  the fingerprint template enrolled in the device is larger than  this  threshold,  the  matching  is  successful; otherwise, the matching is not successful.

 1: N Threshold: This parameter is used to set the threshold  of  matching  between  the  current fingerprint  and  the  fingerprint template  enrolled in the device in the 1: N verification mode. If the similarity between the current fingerprint and the fingerprint template enrolled in the device is larger than this  threshold,  the  matching  is  successful;  otherwise,  the  matching  is  not
successful.

The recommended thresholds are as follows: 

Algorithm Version: This parameter is used to select the fingerprint algorithm version  between  9.0  and  10.0.  Please  select  the  algorithm  version  with caution because the fingerprint templates of these two algorithm versions are incompatible.
Fingerprint Image:  This  parameter is  used  to set  whether  to display thefingerprint image on the screen during fingerprint enrollment or comparison. It has four options: Show for Enroll: Display the fingerprint on the screen in enrolling process.
Show for Match: Display the fingerprint on the screen in verification process.
Always Show: Display the fingerprint on the screen in enrolling and verifying process. Never Show: Never display the fingerprint on the screen in any case.