Knowledge-based augmented reality for maintenance assistance

...

- Knock, knock!

- Who's that?

-The police, open the door, please.

-It's 3 o'clock in the morning, how can that be the police?

-There's an order from above: we have to arrest you. Nothing personal.

-That's impossible! I've done nothing wrong lately...

-I'm sorry but...
...

This is what you get when you mess with us.