Magnetic Fields provide a new way to communicate Wirelessly with Lower Power and more Security

Electrical engineers at the University of California, San Diego demonstrated a new wireless communication technique that works by sending magnetic signals through the human body. The new technology could offer a lower power and more secure way to communicate information between wearable electronic devices, providing an improved alternative to existing wireless communication systems.
https://www.youtube.com/watch?v=QRmx2LcoGCc&list=PLK2ccNIJVPpB_XqWWq_oaZGIDzmKiSkYc