Techniques Voyeurism

although small spy cameras had existed decades, advances in miniaturization , electronics since 1950s have aided ability conceal miniature cameras, , quality , affordability of tiny cameras (often called spy cameras or subminiature cameras) has increased. consumer digital cameras small in previous decades have qualified spy cameras , , digital cameras of twenty megapixels or more being embedded in mobile camera phones. vast majority of mobile phones in use camera phones.

certain image capturing devices capable of producing images through materials opaque visible light, including clothing. these devices form images using electromagnetic radiation outside visible range. infrared , terahertz-wave cameras capable of creating images through clothing, though these images differ created visible light.