Things They Should Invent: option to sync an ipod with only one computer

There should be a checkbox in itunes to allow your ipod to be synced (syncked?) only with that particular computer. The only way you can add anything to or delete anything from that ipod is through that one computer. Why? Because then if someone steals your ipod, they're stuck with your music. They can't get it off and can't add their own music.