"A Stingray mimics a cellphone tower and forces all nearby mobile phones or devices to connect to it. Every phone that connects to the Stingray reports its number, GPS location, and the numbers of all outgoing calls and texts.”
http://www.gotenna.com - Encrypted and localized antennas that work without cell towers.Create your own network, text specific people and groups, even when you don't have cell tower service.
https://www.blackphone.ch/ - Blackphone combines a custom operating system with leading applications optimized for security.
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(Via.) Liberty Crier