Anything that is wireless uses radio waves (unless it is infra red). That includes your cordless phone at home, bluetooth headsets that you stick into your ear next to your brain (certain members wont have that problem
) and even your remote for unlocking the car.
What about your baby listener that you put next to little cherub, that works on radio with the transmitter next to baby. The new digital ones like ours are probably on a similar frequency to wireless networks and I bet are a similar power output as well.
Next thing people will refuse to travel in a taxi unless the driver turns his radio off.