how does a fingerprint time attendance system work?

Question

with its basic principle of working and technology

Answer 1

This article says they can easily be fooled. If so, they do not work well:

http://www.abc.net.au/science/news/stories/s585792.htm

Of course, the technology has probably improved, in the last 4 years. Still, I remain skeptical about prospects that an automated system might be reliable; not generating false matches nor mismatches.

Answer 2

How Fingerprint Attendance System Works

Answer 3

I can speak for the biometric sold by ADP with the Enterprise eTIME Time and Attendance system. It measures the ridges on a fingerprint and encodes the information for employee verification upon each 'punch'. The information stored cannot be reverse 'engineered' to provide a fingerprint, so it is secure

Every biometric has a margin of error, but most have very high reliability and help eliminate buddy punching. Check out www.adp.com for your payroll and Time and Attendance needs.