SAN FRANCISCO (Reuters) - Public concerns about the U.S. government's secretive surveillance programs exposed by Edward Snowden have spawned a slew of encryption products and privacy services that aim to make electronic spying more difficult.
Two products brought out in the past five weeks illustrate the rapid development of the new marketplace: Blackphone, a handset which started shipping on June 30 for $629 (£372.62), and Signal, a free app that appeared on the iPhone app store last week.
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