Bit-level radio from any PC escapes every "airgap"

http://www.fyquah.me/ramear

You still need to be able to run arbitrary code on the target.

This is why my computers are CaCu₃Ti₄O₁₂gapped.

Just wrap your case in a faraday cage like I do

Get

You can't transmit a signal at any distance with this technique. In order to get a reliable signal, you have to be within the presence of the machine. If an assailant has physical access to the machine, then your game is already over.

>>1
Air gaps are to separate a computer from incoming maliciousness, not to prevent data exfiltration, dumbass.