This is partly to keep it from being used via iChat and other software unintentionally. I'm aware of the possibility of a rootkit or other malicious software being able to override a software lockout, but in truth if the software was able to get that far I might have bigger problems. I want to disable the built in iSight camera in my Macbook Pro (C2D) via software instead of some unsightly tape. I can usually find what I need to know by searching, but so far this problem hasn't been so easy to solve.
