parabellum,
Indeed, you can try what you like. But personally, I reckon something like
Selectamark is more of a deterrent.
In the end, laptops are like bicycles.....highly portable and so the potential of unrecoverable loss is just an eventuality you have to be prepared for. Colonal Mustard was obviously very lucky that (a) the police knew the person on the photo and (b) the laptop hadn't traveled far.