Sample Biometric Driver
As you read the biometric design guide, you should also review the WudfBioUsbSample sample in the WDK. WudfBioUsbSample is a UMDF-based WBDI driver that ships in Windows 7 Beta and later versions of the WDK.
This documentation refers to WudfBioUsbSample to show some of the requirements of a WBDI driver.
Build date: 10/26/2012