We've all been led to believe the intrusive x-ray machine the TSA uses to screen people can detect any metal or other object hidden on a person.  We've been lied to.  The machines are insanely easy to beat.  In fact, they are practically worthless.

Engineer Jon Corbett has posted a video on YouTube describing how to beat the machines. The video shows Corbett carrying a metal case through the scanner, away from his body in his side pocket. Corbett explains that because metallic objects appear as black on the image the scanners produce, the machines do not pick up such objects if they are obscured by the background, which is also black. For reasons unclear YouTube has blocked the video behind an age restriction wall.

Corbett also explains in the video that multiple experts have already pointed out that the scanners can be easily bypassed and are next to useless at detecting explosive material and even metallic objects, meaning that standard metal detectors are more effective than the costly and potentially health threatening radiation firing scanners that are being rolled out in greater numbers across the country.

Corbett was the first person in the country to sue the TSA for invasion of privacy. His case is still ongoing and is headed to the U.S. Supreme Court.