For those who think that possibility of using the speakers to transmit data from the air gap machine is too far fetched step back and look at ShopKick, they hav

For those who think that possibility of using the speakers to transmit data from the air gap machine is too far fetched step back and look at ShopKick, they have been doing this for several years using iPhones and speakers mounted on the ceiling of stores. http://teleautomaton.com/post/1478772622/ultrasound-whispers-beat-out-gps http://teleautomaton.com/post/1478772622/ultrasound-whispers...