Passive WIFI

US engineers have delivered WiFi transmissions that use 10,000 times less power than regular signals.  The new system has been named Passive WIFI and it was created by a team at the University of Washington.  It said to be compatible with current smartphones and routers.
The team achieved download speeds  of 11 MBPS with it's passive system, which made it comparable to modern LTE download speeds, but now they're reportedly working to increase the throughput. The technology could prove beneficial to the consumer electronics industry at large and particularly smartphones and tablets, which rely frequently on WIFI access and feature relatively short standby times.