As we all know fingerprint readers detect body heat.
The problem is when the user/person just came out of a chiller room and have to place his finger on the reader for identification. Similar problem in cold weather.
Is there any solution to this problem?
Just FYI, our fingerprint reader/terminal is available in 4 different options ie. Optical, Thermal, Capacitive, and Electric Field (EF).
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08-23-2012, 12:50 PM #1
Fingerprint readers problem in chiller room & cold weather
10-26-2012, 05:01 AM #2Junior Member
- Join Date
- Oct 2012
It is very critical problem which occur just because low temperature and quite normal in chiller room or during cold weather. There is a solution for this. We can use the NIST ﬁnger print image quality (NFIQ), which is “intended to be predictive of the relative performance of a minutia based ﬁnger print matching system.” This algorithm gives an integerrating o rﬁngerprint image quality using a 1–5 scale. A rating of 1 indicates a very good quality image, while 5 indicates very poor.