Others just have a lot of money and like to own al kinds of gadgets. Gadgets he's got, in abundance and variety. The Micro Max hears the beeps of a touch tone phone, and translates those sounds to numbers. Tap Buster can be installed on any phone, he says, and it tells you if the line is tapped. It can be built into a clock radio, or can have LED indicators or vibrate like a silent pager to signal the presence of a wire.
Contact microphones can listen through walls into the next room.
But most popular at his store, Dresden says, are hidden video cameras and hidden microphones for recording. Some of this recording equipment and other spy gear is loaded into customized padded cases ready for travel. One innovative customer was a documentary filmmaker who purchased a hidden camera, Dresden reports, to get better interviews with his subjects by not making them self-conscious with a visible camera. He may well have been violating the law, however, as recording sound without permission or notice is generally illegal. Among the many other gadgets available in Spy Tech or through it's catalog are a phone recording system that is small enough to be easily hidden.