protect

I have tried many protectors and obfuscators on my projects but havent anyone that works well. I know there isnt any protection that cannot be cracked but there must be some that is hard = requiring alot of time for the cracker, perhaps too much time so they skip trying? Another problem with...

I have made a program, that i want to distribute with a free version, and a pay version. I need a code to make the program so the user can pay, and get emailed a link, which i can do, but i need a code to allow the user to enter their User ID, which was sent to them, (ie. 937823) and a...