It's the ultimate dream item for perverts everywhere: the invisibility cloak. Long the realm of sci-fi, it's been something thats understandably not yet around. But it may actually become a reality in the future thanks to a new "metamaterial."

This flexible film contains tiny structures that can manipulate light to make objects seem invisible. Here's how:

Metamaterials work by interrupting and channelling the flow of light at a fundamental level; in a sense they can be seen as bouncing light waves around in a prescribed fashion to achieve a particular result.

We're still a ways off from invisibility cloaks being a real thing, but this is a pretty promising first step. Your shower will never feel safe again.

Via BBC