Smart glasses

Always losing your car keys? Help is at hand, after scientists invented a pair of glasses that will play back footage of the last time you saw them. Japanese academics unveiled the invention, codenamed Smart Goggle, which not only records what the wearer is seeing, but recognises it.

So, rather than searching for those elusive keys, you can tell the glasses what you are looking for and the technology will show you when, and where, you last saw it.

In the future, claims inventor Yasuo Kuniyoshi, the glasses will actually be more intelligent than the wearer, able to identify objects that their owner does not recognise.

In theory, the only question that the glasses will not be able to answer is "Where have I put my glasses?".