A cell phone with a high frequency tone generator at a hardware level would be so ridiculously easy to include. If you are familiar with the stuxnet hack at all then you may recall that a portion of the method to attack airgapped machines was to play tones from the other room and allow infected machines to pick up those tones.
How difficult is it really to play a tone from a compromised cell phone that is beyond the auditory capabilities of humans? Easy at the software level and not impossible at the hardware level.
letsbebuns commented on China instructs Bible to be rewritten as pro-communist reddit
A cell phone with a high frequency tone generator at a hardware level would be so ridiculously easy to include. If you are familiar with the stuxnet hack at all then you may recall that a portion of the method to attack airgapped machines was to play tones from the other room and allow infected machines to pick up those tones.
How difficult is it really to play a tone from a compromised cell phone that is beyond the auditory capabilities of humans? Easy at the software level and not impossible at the hardware level.