User guide
AC-2100 User Guide    11 
UNIONCOMMUNITY Co., Ltd. / 3F Hyundai Topix Bldg. 44-3 Bangi-dong Songpa-gu   
Seoul, Korea (138-050) 
Tel : 02-6488-3000 , Fax : 02-6488-3099, E-Mail :sales@unioncomm.co.kr 
http://www.unioncomm.co.kr 
If possible, use the index finger and enter fingerprint as if you are making a 
thumbprint. Just touching a finger to the fingerprint input window is not the 
proper way for registration/input. The proper way is to touch the center of 
fingerprint on the fingerprint input window. 
z  If possible, use the fingerprint of the index finger for input. 
With the index finger, a more accurate and stable fingerprint can be entered.   
z  Check whether the fingerprint is clear or it has wound. 
Too dry or wet fingerprint, blurred fingerprint and fingerprint with wound are 
difficult to recognize. In such a case, use the fingerprint of a different finger 
for registration. 
z  Cautions according to the conditions of user’s fingerprint 
A fingerprint may not be usable or may be inconvenient to use depending on 
the conditions of fingerprint. 
¾  This product is a fingerprint recognition system. If a fingerprint is 
damaged or weak, it cannot be used. If that happens, use a password for 
operation. 










