University researchers are working on technology that turns an entire room into a wireless battery charger for smartphones and other devices.
A team led by Professor Yoshihiro Kawahara of the University of Tokyo ran successful tests of the technology in a specially constructed room.
The walls and floor were embedded with boards that generate a magnetic field throughout the room.
The test showed a smartphone receiving power wirelessly and the battery started charging. A light in the room also came on without being connected to an outlet.
The system removes the need to place phones and other devices next to a wireless charging device.
The researchers say no groups have yet to commercialize room-wide wireless charging technology.
The group says it is following international safety guidelines on use of magnetic fields. Its next step is to improve charging efficiency and reduce costs.