Packets DownRange
An ultrasonic beacon is a short audio signal. It lives above normal hearing, often above 18 kHz. Speakers in TVs, kiosks, or stores can play it. To you, it sounds like silence. To a phone microphone, it sounds like data. The beacon often carries a simple ID. That ID links to an action, such as logging a visit or triggering an ad.
John Lovell interviews professional hacker on cyber security, privacy on the internet, cyber terrorism, penetration testing, information / data security, confidentiality, phishing, the dark / deep web, and hacking in Hollywood movies such as James Bond Skyfall, Hackers, Swordfish, the Net, Mr. Robot, and other movies.
https://yro.slashdot.org/story/19/08/13/200217/facebook-paid-contractors-to-transcribe-users-audio-chats Facebook has been paying hundreds of outside contractors to transcribe clips of audio from users of its services, Bloomberg reported Tuesday, citing people with knowledge of the work.
I am sure this has been going on for awhile, but now it is being ramped up. https://www.zdnet.com/article/fbi-seeks-to-monitor-facebook-oversee-mass-social-media-data-collection/ The Federal Bureau of Investigation (FBI) is planning to aggressively harvest information from Facebook and Twitter, a move which is likely to cause a clash between the agency and social media platforms. As reported by the Wall … Read more