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Volunteers in metadata study called gun stores, strip clubs, and more
Cyrus Farivar, arstechnica.com

Scallop HoldenSince November 2013, researchers at Stanford University have been asking: What’s in your metadata?Specifically, the study encouraged volunteers who also used Facebook to install an app called MetaPhone on their Android phones. The ap…

“’We did not anticipate finding much evidence one way or the other, however, since the MetaPhone participant population is small, and participants only provide a few months of phone activity on average. We were wrong. We found that phone metadata is unambiguously sensitive, even in a small population and over a short time window. We were able to infer medical conditions, firearm ownership, and more, using solely phone metadata.’”

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