Hidden camera

A hidden camera or spy camera is a camera used to photograph or record subjects, often people, without their knowledge. The camera may be considered "hidden" because it is not visible to the subject being filmed, or is disguised as another object. Hidden cameras are often considered a surveillance tool. The term “hidden camera” is commonly used when subjects are unaware that they are being recorded, usually lacking their knowledge and consent; the term “spy camera” is generally used when the subject would object to being recorded if they were aware of the camera's presence. In contrast, the phrase "security camera" refers to cameras that are visible and/or are accompanied by a warning notice of their presence, so the subject is aware of the camera's presence and knows they are being filmed. The use of hidden cameras raises personal privacy issues. There may be legal aspects to consider, depending on the jurisdiction in which they are used. A hidden camera can be wired or wireless. Hidden cameras connected, by cable or wirelessly, to a viewing or recording device, such as a television, computer, videocassette recorder, network video recorder, digital video recorder, memory card, or another data storage medium. They may also store their images or recordings online, such as through a livestream. Hidden video cameras may or may not have audio recording capabilities. Hidden cameras may be activated manually, remotely, or through motion detection. A hidden camera may not be visible to the subject, for example, because it is fitted with a long-focus lens and located beyond the view of the subject, or because it is obscured or hidden by an object, such as a one-way mirror. Hidden cameras can be built into a wide variety of items, ranging from electronics (television sets, smoke detectors, clocks, motion detectors, mobile phones, personal computers) to everyday objects where electronics are not expected to be found (stationery, plants, glasses, clothing, street lights).