I’m sure I’ve seen this in films. The hero looks at you through glasses and on the screen comes up information about you. In this case, your age, gender and most specifically what mood you’re in.

But of course now that you can actually do this with Google Glasses and some newly-announced software, you’re not a hero. And it’s one of those cases where software need only pretend to be clever because actually all it’s got to do is tell you that the person you’re looking at through these things is pissed off at you.

I can see that something like this might help people with Aspergers’ who have trouble recognising facial clues. But I feel a punch to the face clears up many confusions.