Bobby Bones decided to do a Show & Tell on the Bobby Bones Show today.
He brought in a product that he had just purchased from Amazon. He's been spending a lot of his time watching FBI and CIA type shows so he's a little paranoid about finding hidden cameras when he travels places. So he bought a RF detector, so all he has to do is bring it into a room, walk around with it, and it will detect any cameras in a room. He showed the other show members how it works in studio and when he walked up to every phone, the RF jumped. They also jumped when it was put up against the studios' cameras.
Here is a product similar to the one Bobby purchased in case this is something you're interested in moving forward.