Today’s invention offers a way to get more airline passengers aware of how to operate an airliner door, in the event of an emergency.
The main doors to each of the toilet blocks in an airport would be made to resemble closely the doors on various current aircraft.
It would be necessary to operate one of these to use the bathroom.
In this way, many more of the travelling public (who don’t read the safety instructions) would be informally trained in the use of this vital mechanism.