As its mini size and light weight, pinhole surveillance camerashttp://www.cctvhotdeals.com/digital-wireless-cctv-ir-surveillance-security-audio-camera-kit-1.html are widely used almost everywhere. People use them to guard their home, police employ them to get evidence at dangerous occasions and correspondents adopt them to acquire real material etc. However, pinhole security camerashttp://www.cctvhotdeals.com/digital-wireless-cctv-ir-surveillance-security-audio-camera-kit-1.html may be ignored in public location, and therefore some repulsive things such as digging a nose or an ear even undoing dress to scratch. Even worst, some people use them to do malicious things and illegal acts. As showed in some newspaper or magazines, bad men install pinhole cameras in a hidden place in a washroom or a fitting room.

A hidden surveillance camera spy device is used to invade a person's privacy in their home or place of business. Recognizing a spy device isn't easy because they are well-hidden. So how do we recognize pinhole cameras and other hidden surveillance cameras in public locations? And how do we avoid exposing us to hidden cameras