It is almost here. A cloak you can use to render yourself invisible.
“A special, multi-layered coating of a substance known as a metamaterial has been developed over the past two decades, enabling electromagnetic radiation of certain specific wavelengths to pass freely around an object.”
So light is passing around to the other side. Just like Harry’s invisibility cloak. Somehow I’m thinking this will not be so easily, but I’m hoping for real success in the succeeding generations of the technology.