Snowden develops an iPhone case meant to kill surveillance

National Security Agency whistleblower Edward Snowden has come up with a concept iPhone case that could prevent the government from finding the user's location.

Smartphones, while incredibly useful, are also the “perfect tracking device,” Snowden wrote in a co-authored paper that covers his research.

Governments can monitor a user’s location through the radio signals from the phone, which can put journalists, activists and rights workers in danger, he warned.

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