how to become invisible

Some scientists think that cloaking devices that provide invisibility are technically possible:

Forget Harry Potter and his "invisibility cloak" -- theoretical physicists in the UK and US have proposed a clever way of making objects invisible. It would involve surrounding the object by a "metamaterial" -- a type of composite material that has unusual electromagnetic properties. According to the researchers, light rays incident on the material would be bent around the object, only to emerge on the other side in exactly the same direction as they began. Although the work is only theoretical, the researchers reckon that materials invisible to radio waves could be produced within five years.

It seems like an awfully complex solution to the problem. Wouldn't it be much easier to find a volcano, some gold and a blacksmith with some seriously wicked magical skills?