The Null Device
A list of 10 bizarre inventions patented in the name of fighting terrorism, from nondescript trucks with machine guns to bomb-proof anti-suicide-bomber nets (which looked like repurposed Nixon-era hippie-containment apparatus) to trap doors on airliners and remotely triggerable tranquilliser syringes in airline seats for incapacitating suspicious individuals:
Make all passengers wear armbands that monitors their body for signs of falsehood and evil (ooh, say heart pulsation and blood pressure - hey, it's in the patent application, mmkay?). And did I mention there's a syringe filled with a strong tranquilizer connected to the thing? One "anomalous emotional condition," then off to dreamland they go!And, if all else fails, there's even a patent for mobile crematoria for disposing of all the bodies.