New for Biometric Drivers
Windows 7 includes a new biometric framework (the Windows Biometric Framework) and driver model (the Windows Biometric Driver Interface). In Windows 7, the Windows Biometric Driver Interface (WBDI) supports fingerprint-based devices only.
The Windows Driver Kit (WDK) that is released with Windows 7 includes documentation for the WBDI as well as a new UMDF-based sample biometric driver. For information about WBDI, see the biometric Design Guide and Reference sections.