A couple of weeks ago, a burglar broke into the flat belonging to my friend Duncan Grisby. Sadly, burglaries are all too common in the Cambridge area, and the police are unwilling or incapable of doing anything about it. I have never, ever, heard of a burglar being caught, and certainly never heard of them being sentenced as a result.

Until now. This one hadn't reckoned on Duncan and his software.

More information from the BBC and from Duncan's own website.