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Some forecasts project the home security market as a whole will be worth $47 billion by 2020, [12] with the DIY home security market worth $1.5 billion. [13] While the market for home security is expanding, especially with cable TV and Internet service providers introducing their own security and home automation products, it is a fragmented ...
A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary or property damage, as well as against intruders. Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms.
In September 1968, Olean, New York, was the first city in the United States to install CCTV video cameras along its main business street in an effort to fight crime. [25] Marie Van Brittan Brown received a patent for the design of a CCTV-based home security system in 1969.
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A laser fence mechanism detects objects passing the line of sight between a laser source and detector. [1] Stronger lasers can be used to injure entities passing the laser beam, as in a mosquito laser. [3] Fictional uses of laser fences often extend the concept so that fences may have the ability to prevent intruders by blocking or injuring them.
The Biden administration has moved to forgive about $4.7 billion in U.S. loans to Ukraine, State Department spokesperson Matthew Miller said on Wednesday, as outgoing officials seek to do what ...
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