New threat to physical security

If you're like me, then today your Google Alert set to "invisibility cloaks" finally paid off.

This promising new research on ways to become invisible is completely awesome, but I can't help but wonder what security threats loom on our horizon. Perhaps in the future, there will have to be some kind of "clothes line" device that swoops down after each person that uses an access badge to enter a building. Better learn how to move quickly folks. And if you hear a massive *thud* after you enter, you can assume you've either thwarted a highly backed criminal mastermind or a plucky young wizard.