Window Installer (MSI)

http://en.wikipedia.org/wiki/.msi

An engine for the installation, maintenance, and removal of software on Microsoft Windows systems.

Finger Prints and other Biometrics in Windows 7

http://gcn.com/articles/2009/10/16/getting-your-fingerprints-on-windows-7.aspx?s=gcndaily_221009

Biometrics is now part of Windows 7.  Any device that conforms to the Windows Biometric Framework (WBF) should work.