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2. Hidden camera - Wikipedia

   en.wikipedia.org/wiki/Hidden_camera

   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.

3. Night vision - Wikipedia

   en.wikipedia.org/wiki/Night_vision

   Active infrared night-vision combines infrared illumination of spectral range 700–1,000 nm (just over the visible spectrum of the human eye) with CCD cameras sensitive to this light. The resulting scene, which is apparently dark to a human observer, appears as a monochrome image on a normal display device. [ 15 ]

4. Night-vision device - Wikipedia

   en.wikipedia.org/wiki/Night-vision_device

   The effect on the natural night vision of the eye is evident A standard telescopic sight augmented with a night-vision device in front on the M110. Note that in addition to the image intensifier, the NVD gathers much more light by its much larger aperture A 1PN51-2 night-vision reticle with markings for range estimation First-person view ...

5. Mass surveillance in the United States - Wikipedia

   en.wikipedia.org/wiki/Mass_surveillance_in_the...

   The Department of Homeland Security is funding networks of surveillance cameras in cities and towns as part of its efforts to combat terrorism. [146] In February 2009, Cambridge, MA rejected the cameras due to privacy concerns. [147]

6. Automotive night vision - Wikipedia

   en.wikipedia.org/wiki/Automotive_night_vision

   Night Vision Assistant infrared camera visible on Audi A8 grill, right circle. Night Vision Assistant was introduced in 2010 on the Audi A8. It uses a thermal imaging camera behind the four rings at the front of the car which can "see" 300 meters (984 ft) ahead. The display in the instrument cluster highlights humans with yellow markings.

7. Digital camera - Wikipedia

   en.wikipedia.org/wiki/Digital_camera

   Kodak PixPro smart lens camera series, announced in 2014. These include: the 5X optical zoom SL5, 10X optical zoom SL10, and the 25X optical zoom SL25; all featuring 16MP sensors and 1080p video recording, except for the SL5 which caps at 720p. [58] ViviCam IU680 smart lens camera from Sakar-owned brand, Vivitar, announced in 2014. [59]