"Using a $250,000 network analyzer, we find that although on average all helmets attenuate invasive radio frequencies in either directions (either emanating from an outside source, or emanating from the cranium of the subject), certain frequencies are in fact greatly amplified. These amplified frequencies coincide with radio bands reserved for government use according to the Federal Communication Commission (FCC). Statistical evidence suggests the use of helmets may in fact enhance the government's invasive abilities. We speculate that the government may in fact have started the helmet craze for this reason."

An article on Tin Foil hats

Ah! So if I wear a tin foil hat and think "Help!" really hard, it's the same as a PLB?

The Tin foil hat acts as a crude 1/2 and 1/4 wave cavity (the diameter of the tin foil hat) amplifing the Electro Magnetic waves from Government Radio transmission. Best stick to some aviation 'stealth' RAM principles - A motor cycle helmet covered with glued on Ferrite disks works the best. (best to glue them on the inside of the motorcycle helemt otherwise folks will think you look a bit strange)

http://parts.digikey.com/1/parts/672514-ferrite-emi-disc-16-51mmx1-27mm-mm0650-100.html

Get your work collegue/family member to wear the tin hat and stand them 6 feet away from the computer screen and play the video on this UK Government BBC website.

http://www.bbc.co.uk/bbcthree/videohub/esptest.shtml

Just remember the following;

The play button actually has 5 links

Circle - Top Left
Cross - Top Right
Wavy Line - Bottom Left
Square - Bottom Right
Star - Centre

Enjoy...LOL..(BTW a before test, where the victim gets very few psychic thought transmissions correct then rerunning the the test with the tin hat, where the victim gets them all correct is even more entertaning )