A human Satnav, using electrodes to send people in the right direction, has been developed by German scientists. It works by sending a signal from a mobile phone, which stimulates a muscle in the leg, showing them the direction they need to go in.
Max Pfeiffer, from the University of Hannover, was the brains behind the operation. He tested it on a group of students in a local park who had no idea where they were going.
Their movements were directed by a mobile phone, which sent a bluetooth electric pulse-like signal, stimulating the sartorius muscle, which runs all the way from the inside of the knee, through to the outer thigh.