Expiry for projector..?

Greetings,
need help again…
Was wonderin if i cud set an expiry date to a flash projector so that it stops to function after that date…or can i set user & password for a projector so that it ceases after a certain number of times the user has logged in…

like as its done with websites …
//get cookies…
if visits = …
so…
some stuff like that…

thanks