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spc mobile world congress blackphone jon callas_00011512.jpg

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    World's first 'hacker-proof' smartphone?

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World's first 'hacker-proof' smartphone?

Blackphone co-founder Jon Callas explains how his smartphone places privacy in the hands of its user. CNN's Jim Boulden reports.

World's first 'hacker-proof' smartphone?

Blackphone co-founder Jon Callas explains how his smartphone places privacy in the hands of its user. CNN's Jim Boulden reports.