From The Unintended Consequences Department

(via boing boing)

It’s sad that interaction with the authorities has become so dangerous that we need to invent safety devices for it.

Unfortunately, this is the kind of idea that would actually nullify the safety benefits of putting your hands up, because the same kinds of cops that mistake hair brushes for guns aren't going to be able to tell if your hands are really up and will shoot you just to be on the safe side (because their number one concern isn't public safety anymore, it's their own).