Hi, Edward
One way to do it, is to find the serialno. on the harddrive you install your app. on, and save it in an .ini file.
Each time your app. is started it checks the serialno. on the harddrive. If they don't match, then "do something bad to the user".
>I have developed an application which will be used by over 50 locations. I would like to prevent my application from illegal copy usage by unlicenced users. Is there any way to enact it?
Benn Kjaer
MS Certified Professional - Visual Foxpro
"There is something rotten in the state of Denmark"
"Why make user-friendly programs, when there aren’t any friendly users :o)"