Jason Humphreys has been arrested in Florida, accused of operating a mobile cell phone jammer from his car. The 60 year old was allegedly so upset about use of cell phones in cars that he decided to take matters into his own hands. Police claim Humphreys operated the electronic device in traffic for over two years. Cell phone jammers work by "flooding" the area with low-frequency electromagnetic waves. Most electronic communications, including phones, police radios, scanners, and GPR can be affected by these devices. They are illegal under federal law, but can easily be purchased online. The Federal Communications Commission could impose a fine of up to $48,000 on the resident of Seffner, Florida. MetroPCS first noticed a blackout area on Interstate 4 and downtown Tampa a year ago. Authorities soon realized the interference was emanating from a blue Toyota Highlander.