This question comes from an attendee at one of my TechEvents this week.  The answer is YES, you can. 

 

Check this link http://technet2.microsoft.com/WindowsVista/en/library/58358421-a7f5-4c97-ab41-2bcc61a58a701033.mspx#BKMK_MultiKeyOneUSB  Look under Key Management #7