posted on Aug, 21 2014 @ 02:30 AM
Lets start with radio first. These devices can not pick up radio signals coming from your radio. The radio stations trasmit on a given frequency which
covers an area all the time, there are multiple radio stations all doing this. You tune your radio to pick up one of these frequencies and that is
all, your radio does not put out any frequeny! Thus, when you tune to a station, the device can not know which one or even if the radio is on! The
radio only listens. If this device were to use radio signals, it would pick up ALL of them even if your radio was off.
The same happens with TV except with cable, you could have a device plugged into the cable that comes after your cable box and it could tell which
channel it is. It can not tell what channel your TV is on unless its connected to the cable in some way after the cable box ( unless your TV can
stream wifi signals). So unless your TV has wifi, those devices wouldn't be able to tell if the TV is on or off. If this device used TV signals
broadcasted through air, it would pick up all of them at the same time unless you can tune this device into the same exact channel you have on at the
If the device can be kept in your pocket the whole time, they can still hear somewhat. Also, whats to stop you from unplugging the stationary unit
and taking it into other rooms...or to other peoples homes.
edit on 21-8-2014 by XL5 because: (no reason given)