Anyone who carries around a smartphone or any mobile device with GPS enabled is constantly broadcasting where they are, Jonas said. Cell phones are generating a "staggering amount" of geolocational data, over 600 billion transactions per day in the United States alone, Jonas said.
The data quickly reveals where people spend most of their time and who they spend it with, he said. "Deidentified" does not mean "true anonymization," especially in large data sets, Jonas said. Figuring out who is who is "somewhat trivial," he said.
It is possible to predict with "87 percent certainty" where someone will be at a certain time in the future, he said. A government intelligence service could pre-empt the next mass protest in real time based on geolocation data alone, he said.
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