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Ben Carson

Cruz app data collection helps campaign read minds of voters

Protecting the privacy of law-abiding citizens from the government is a pillar of Ted Cruz's Republican presidential candidacy, but his campaign is testing the limits of siphoning personal data from supporters.

His "Cruz Crew" mobile app is designed to gather detailed information from its users' phones — tracking their physical movements and mining the names and contact information for friends who might want nothing to do with his campaign.

That information and more is then fed into a vast database containing details about nearly every adult in the United States to build psychological profiles that target individual voters with uncanny accuracy.

Cruz's...

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