[alsiladka]

I voted for B.
Since i am a Cyber Law Student, i understand how difficult it is to track down the culprit if a public computer is used. ID Proof is extremely important. Tracking down the exact time the crime or fraud was committed is easy, and having a ID Proof of the person who used that computer at that time means you have your man.

Having everything recored via a camera is a bit complex process, as it would require every day's video to be saved if it has to be of any use. But then, once you know the time of the fraud or crime and have the ID of that person, i am not sure how the camera would help more.

And since we are talking about a single bad egg in crores of other, keyloggers are more harm than help. A definite no no for a keylogger.