What's so special about sentinal pro dongle

[John Foust]

At 01:33 PM 4/25/2005, Mike wrote:
>I am starting to get curious.   Out of all my machines the one I get the most 
>requests for is the sentinal pro dongle. Is there a pending patent case?
>Is the software that required these still in use or demand?

Maybe someone hoping they'll work on some copy-protected program
they own or want to run.  I've got a dozen or more for 3D programs plus the 
Rainbow Tech SDK.  As I recall, they have a unique manufacturer ID, 
so I don't think they are interoperable between applications.

- John