Remember Yamaha's InfoSound technology? If not, well, it's a bit of black magic that shoots data wirelessly to devices using an inaudible (to humans, anyway) 18kHz signal emitted from a speaker and received via microphone. Yamaha came up with the idea back before the ubiquity of WiFi-enabled TVs, and now it's partnered up with Fuji Television Network to develop apps for phones and tablets that use the tech. Keep in mind, InfoSound has a fairly short range (33 feet) and max
