These claims are based on some programmers and other IT security people's claims, that are purely talking about the software side of things.
The physics side of it makes me frown... In order to emit ultrasonic waves over a good enough range (for even shadow-networking someone who's sitting in a park, for instance), you need to allocate a lot of power on the emitting circuits. Also you need a special type of antenna/transducer for ultrasonic waves... Long range ultrasonic devices like dog repellents are pretty circuitry.
Furthermore, with so many electronics technicians out there, why no one (AFAIK) has found the presence of such covert circuitry in laptops?
These claims are based on some programmers and other IT security people's claims, that are purely talking about the software side of things.
The physics side of it makes me frown... In order to emit ultrasonic waves over a good enough range (for even shadow-networking someone who's sitting in a park, for instance), you need to allocate a lot of power on the emitting circuits. Also you need a special type of antenna/transducer for ultrasonic waves... Long range ultrasonic devices like dog repellents are pretty circuitry.
Furthermore, with so many electronics technicians out there, why no one (AFAIK) has found the presence of such covert circuitry in laptops?