http://blogs.msdn.com/b/pointofservice/archive/2009/09/23/interfacing-with-biometric-devices-from-pos-applications.aspxSupport for Biometric devices (such as fingerprint readers) was added to the Unified POS specification and incorporated into Microsoft’s POS for .NET in version 1.10. This device category allows applications to interface with such devices and is helpfulen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)