As for the tinfoil hat, it needs two layers --- the inside layer needs to be orientend shiny-side in, which would prevent the NSA from spying on your brain waves. But the outside layer needs to be oriented shiny-side out, to prevent the NSA from feeding your brain with undesired signals. The two layers need to be well insulated against each other --- it's obvious that a short-circuit between them will leave you completely vulnerable...
I prefer kevlar in the insulated layer. Also my hat is more of a full helmet. Like to make it slightly more difficult in the event they decide my process needs to be terminated.
:-)
Alan