A hidden camera is a still or video camera used to film people without their knowledge. The camera is “hidden” because it is either not E20-322 exam visible to the subject being filmed, or is disguised as another object. Hidden cameras have become popular for household surveillance, and can be built into common household objects such as smoke detectors, clock radios, motion detectors, ball caps, plants, and cellphones. Hidden cameras may N10-003 exam also be used commercially or industrially as security cameras.
A hidden camera can be wired or wireless. The former will be connected to a TV, VCR, or DVR, whereas a wireless hidden camera can be used to 220-601 exam transmit a video signal to a receiver within a small radius (up to a few hundred feet).