How to stop exam cheating?

The Register (UK) carried a news item about an interesting idea to prevent Students from cheating in exam halls – it is to put them in cages :-). Read more here at “How to stop exam cheating: put teenagers in cages | The Register”

I am wondering what happened to good ol’ copying by seeing the answers of the Topper in front of you?. Nothing can beat the thrill and joy of it – I am not advocating this, but doing it during your class trial tests are nevertheless fun, right? :-)