private investigators and the new technology is not limited to professional snoops. some fear it is making us a total surveillance society. you sell to everyone. >> we have a vast array of customers, ranging from parents and wives and by friends and girlfriends. >> johnathon mark runs spy tech, a spy super store in new york city. and cameras and keys and clock radios and pens and coat hangars and even in the reading glasses. >> the camera is on the bridge of the nose. >> he has sophisticated apps that down load the contents of a computer in minutes and a gps tracker that is attached to the cars at any time. >> go on line and track the vehicle in real time. >> every year the technology gets better and better.