I agree. Bluetooth Hearing aids are an exploding field. Tethered to a smartphone app, sound reception can be shaped to the user and environment. Using in-ear audiometry, the precise freqeuncy deficit can be supplemented by the device. In addition, different filters can be applied for different listening environments — a concert, or a busy train or a library to filter noise. These hearing aids can even use a GPS “find my hearing aid’ function or beep when they inevitably get misplaced or a beep to notify you a table is ready at a restaurant. They can also be very capable bluetooth headphones for music or talking on the phone through conduction sound transmission. Add to them voice commands to Siri with feedback and you have a device than even normal hearing people would use. But will we end up talking to ouselves and our devices more than to each other? We already text on our phones more than talk. The two Achillies’ heels: Battery life and they are expensive but Moore’s Law will apply soon enough. See BioAid, ReSound, Sound World Solutions, Halo, Audicus, and others for a variety of solutions.