...make them a poor choice for a multi user operating system. There are applications that require devices like USB, biometrickeyboards etc. Now there is a complimentary way to deliver these troublesome applications with XenApp. It has...
http://community.citrix.com/pages/viewpage.action?pageId=77660443
Precise Biometrics offer the market leading fingerprint logon device for MS Windows (95 / 98 / NT / 2000 / XP). The solutions incorporate Precise's unique image processing algorithm real time. The suite of products offers flexibility and a totally secure form of logon solutions.
http://www.nb-data.co.uk/Precise%20Biometrics.htm