So who said that USB would never catch on? Here’s a very neat little USB application – the PC Lock.

PC-Lock is an easy-to-use computer security tool that works as well as the lock on your door, only the owner can get in.

You can use it to prevent computer start up (no key, no boot). Control web surfing by the kids (permit/prohibit certain web sites) and keep private files secure behind a File Safe folder. It can also control a total of 3 computers. Just don’t forget your PIN number!

(Update: Sorry Andi and co. Priced at $28.00 from here.)