3 ms·

From what I've gathered a tinfoil hat would have the reverse effect, acting as a parabolic antenna directing radio waves into the persons head.

nbdev 9y ago
Maybe a Faraday cage out of foil could work? It's been asked here before: https://news.ycombinator.com/item?id=9660752 https://news.ycombinator.com/item?id=9660752
planteen 9y ago
It would probably work if you made it out of copper foil and grounded it. But then of course you are no longer mobile and the enemy could easily snip the ground wire coming out of your hotel room. ;-)
- komali2 9y ago
  Could stick the ground into the ground of an outlet? Barring the risk of missing and cooking your brain in your newfangled electro-cap seems like it'd be difficult to cut the entire hotel's ground.
  - SturgeonsLaw 9y ago
    "Wear a copper cap and plug it into an electrical socket" See now, this is why they tell people not to take advice from the internet :)
giardini 9y ago
Depends on whether the wearer is: - 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.

nbdev 9y ago

Maybe a Faraday cage out of foil could work? It's been asked here before: https://news.ycombinator.com/item?id=9660752 https://news.ycombinator.com/item?id=9660752

planteen 9y ago

It would probably work if you made it out of copper foil and grounded it. But then of course you are no longer mobile and the enemy could easily snip the ground wire coming out of your hotel room. ;-)

komali2 9y ago
Could stick the ground into the ground of an outlet? Barring the risk of missing and cooking your brain in your newfangled electro-cap seems like it'd be difficult to cut the entire hotel's ground.
- SturgeonsLaw 9y ago
  "Wear a copper cap and plug it into an electrical socket" See now, this is why they tell people not to take advice from the internet :)

giardini 9y ago

Depends on whether the wearer is: - 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.