Imagine a world where a team could keep track of their star player 24 hours day. You could see what they had for breakfast, when they last went to the toilet, which muscles were in danger of tearing—even whether they had engaged in sexual intercourse the night before a big match.
To take things further, what if you could send electric signals pumping through a player's body to ensure they performed a pass correctly or struck the ball with perfect technique? It might sound like fantasy, but it could be here sooner than you think.
The idea of an "active skin," of membranes printed onto the human body, has been discussed and explored in laboratories, meeting rooms and coffee shops across the world.