It even promises to improve health care. “Because bacteria can spread via electrical outlets,” the company says, hospitals using uBeam “will be cleaner and safer for patients.”

A TechCrunch interview from Saturday concedes the point, saying, The system “requires a line of sight and can’t charge through walls or clothes.” The latest story, though, didn’t address the obvious discrepancy with the earlier account. The most recent story says uBeam could transmit up to 4 meters, far less than the 30 feet (9 meters) claimed in an earlier piece.

via Experts Still Think uBeam’s Through-the-Air Charging Tech Is Unlikely – IEEE Spectrum.