The inventor of an "invisibility" cloak has said that his next project will be to develop the technology to allow people to see through walls.But ever since I first played a thief in my first Dungeons & Dragons game, I've always wanted my own "Cloak of Invisibility". Looks like it may be as expensive and rare in real life as it is in the game.
Susumu Tachi, who showed off the cloak at an exhibition in San Francisco earlier this month, said he was hopeful of providing a way to provide a view of the outside in windowless rooms.
"This technology can be used in all kinds of ways, but I wanted to create a vision of invisibility," he told BBC World Service's Outlook programme.
"My short-term goal would be, for example, to make a room that has no outside windows appear to have a view to the outside, then the wall would appear to be invisible."
Use and misuse
Professor Tachi's cloak works by projecting an image onto itself of what is behind the wearer.
A computer generates the image that is projected, so the viewer effectively sees "through" the cloak.
The key development of the cloak, however, was the development of a new material called retro-reflectum.
"This material allows you to see a three-dimensional image," Professor Tachi said.
"This material is the key to our technology."
There are many potential uses of the cloak, ranging from espionage and military purposes to helping pilots see through the floor of the cockpit to the runway below.
However there are massive questions of potential misuse too, particularly surrounding the huge crime implications.
It would become incredibly difficult to spot a thief, for example, if the items they were taking were simply disappearing under the cloak.