>If the signals were audible sound, you'd know when someone was jamming it. This would be very popular in East Asia. They love everything that beeps. Rice cook

>If the signals were audible sound, you'd know when someone was jamming it. This would be very popular in East Asia. They love everything that beeps. Rice cookers play a melody, pedestrian crossings play a melody, garbage trucks play a melody. Japan is the country of beeps.