Protection against automation

Question

One of our next projects is supposed to be a MS Windows based game (written in C#, with a winform GUI and an integrated DirectX display-control) for a customer who wants to

Answer 1

A common method of listening to keyboard and mouse input in an application is setting a windows hook using SetWindowsHookEx. Vendors usually try to protect their software during installation so that hacker won't automate and crack/find a serial for their application. Google the term: "Key Loggers"... Here's an article that describes the problem and methods to prevent it.