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2. Stingray use in United States law enforcement - Wikipedia

   en.wikipedia.org/wiki/Stingray_use_in_United...

   The use of stingrays by United States law enforcement is an investigative technique used by both federal and local law enforcement in the United States to obtain information from cell phones by mimicking a cell phone tower.

3. Stingray phone tracker - Wikipedia

   en.wikipedia.org/wiki/Stingray_phone_tracker

   Cellular telephones are radio transmitters and receivers, much like a walkie-talkie. However, the cell phone communicates only with a repeater inside a nearby cell tower installation. At that installation, the device takes in all cell calls in its geographic area and repeats them out to other cell installations which repeat the signals onward ...

4. Cellphone surveillance - Wikipedia

   en.wikipedia.org/wiki/Cellphone_surveillance

   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

5. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

   www.aol.com/finance/free-reverse-phone-lookup-8...

   Try a free reverse phone lookup site to find out who's calling. ... 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. ... You can also do a reverse cell phone lookup on your mobile ...

6. IMSI-catcher - Wikipedia

   en.wikipedia.org/wiki/IMSI-catcher

   Body-worn IMSI-catchers that target nearby mobile phones are being advertised to law enforcement agencies in the US. [12] The GSM specification requires the handset to authenticate to the network, but does not require the network to authenticate to the handset. This well-known security hole is exploited by an IMSI catcher. [13]

7. U.S. Cellular - Wikipedia

   en.wikipedia.org/wiki/U.S._Cellular

   United States Cellular Corporation (doing business as UScellular and formerly known as U.S. Cellular) is an American mobile network operator. Its stock is publicly traded, but Telephone and Data Systems Inc. owns a controlling stake (83% economic and 96% voting power).