More than half of Americans have uninstalled an application or failed to download one over privacy concerns, a 2012 Pew Internet & American Life Project survey said. That statistic as well as the increasing use of applications has prompted the Federal Trade Commission to issue guidelines to mobile-app developers that state "app developers get express consent before accessing such sensitive data as location information, calendar entries, and photos," Verne Kopytoff writes. But industry trade groups offer competing guidelines in an effort to self-regulate, and AdMobius' Dan Grigorovici notes that the industry needs to further educate the public about their privacy.

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