A camera would not be even close to good enough. It's trivial to type commands in a window that is not visible on your screen, for example. Keyboard logging? No

A camera would not be even close to good enough. It's trivial to type commands in a window that is not visible on your screen, for example. Keyboard logging? Not even close to good enough since you could easily break commands up or write a script that does what you want in an obfuscated way.