Auto Detective Pen to Identify the Rat in your Crew
The Auto Detective pen may be just the thing for the paranoid criminal mastermind that you just happen to know and love. The pen will begin flashing when in the presence of wireless and RF signals within the ranges of 900/1200/1300 and 2400 /2600/3000MHz, and it will flash more rapidly as you draw nearer to the pesky spy device. It will also help them identify counterfeit bills.
I am not sure that they will want to be entrusting their illicit enterprise to a $16 pen that was made in China, but they might appreciate it and repay you with a favor some day.