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2. Radio scanner - Wikipedia

   en.wikipedia.org/wiki/Radio_scanner

   An Icom IC-R5 hand-held scanner A GMRS radio that also has scanning capabilities. A scanner (also referred to as a radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.

3. Police radio - Wikipedia

   en.wikipedia.org/wiki/Police_radio

   Police radio. Police radio is a radio system used by police and other law enforcement agencies to communicate with one another. Police radio systems almost always use two-way radio systems to allow for communications between police officers and dispatchers . Most modern police radio systems are encrypted, and many jurisdictions have made ...

4. Police code - Wikipedia

   en.wikipedia.org/wiki/Police_code

   Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...

5. Johnson County police to encrypt radio scanners, sparking ...

   www.aol.com/johnson-county-police-encrypt-radio...

   January 11, 2024 at 6:02 AM. “Beginning on January 23, 2024, the following Johnson County police agencies will begin full encryption of their radio communications.”. So began a media release ...

6. Stingray phone tracker - Wikipedia

   en.wikipedia.org/wiki/Stingray_phone_tracker

   Stingray phone tracker. The StingRay is an IMSI-catcher, a cellular phone surveillance device, manufactured by Harris Corporation. [2] Initially developed for the military and intelligence community, the StingRay and similar Harris devices are in widespread use by local and state law enforcement agencies across Canada, [3] the United States, [4 ...

7. Citizen (app) - Wikipedia

   en.wikipedia.org/wiki/Citizen_(app)

   He thought about the modern, invisible signals of wireless calls, Wi-Fi and police radio darting through the 19th-century buildings." Vigilante was backed by a seed round of $1 million, led by Founders Fund. The Vigilante app was released to New York City, in the App Store on October 26, 2016.