- facing the threat, whereupon the parabolic antenna focusses the energy on a single part of the brain (and the wearer loses, say, her grandmother or perhaps all words ending in "-ed", etc.) or
- facing away from the threat, whereupon the energy is safely dispersed by the foil.
So one could cleverly use the parabolic foil as a one-time direction detector, asking their friend to wear it for a moment and to please turn to their left or right until something happens? Do this twice with two former acquaintances and you can use their positions and last facing angles to triangulate to the location of the offending equipment.
To protect oneself, one should do a complete head foil wrap (the neck might still be a thruway for danger, since the transmitter could be embedded in the floor, so maybe foil soles for your footwear?) Seems the spies would be significantly easier to spot if this were the typical modus operandi.
- facing the threat, whereupon the parabolic antenna focusses the energy on a single part of the brain (and the wearer loses, say, her grandmother or perhaps all words ending in "-ed", etc.) or
- facing away from the threat, whereupon the energy is safely dispersed by the foil.
So one could cleverly use the parabolic foil as a one-time direction detector, asking their friend to wear it for a moment and to please turn to their left or right until something happens? Do this twice with two former acquaintances and you can use their positions and last facing angles to triangulate to the location of the offending equipment.
To protect oneself, one should do a complete head foil wrap (the neck might still be a thruway for danger, since the transmitter could be embedded in the floor, so maybe foil soles for your footwear?) Seems the spies would be significantly easier to spot if this were the typical modus operandi.