Any ideas on implementing licensing expiration for a piece
od software being sold i.e

Say, a customer gets the piece of software, we
get the current date and time and store it in some hidden area and a year later, make the app inactive if license is not renewed (Would prefer not to keep an internal clock

if at all possible)

though the client may change the computer time...
and stuff like that

Any great ideas appreciated....


This is the first time...