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Analog wireless is found in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz. Currently, the majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with a wireless security 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.
Intentionally hiding a cell phone in a location is a bugging technique. Some hidden cellphone bugs rely on Wi-Fi hotspots, rather than cellular data, where the tracker rootkit software periodically "wakes up" and signs into a public Wi-Fi hotspot to upload tracker data onto a public internet server.This is also legal
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 ]
Wi-Fi (/ ˈ w aɪ f aɪ /) [1] [a] is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.
On May 13, 2009, Google Japan announced that it would modify its cameras to scan from a lower height of 2.05 meters above ground level, 95 centimeters lower than the original height of the camera head. The new height is intended to avoid having cameras view over fences in front of homes and into homes.
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