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[John]

AT&T plans to extend its dual-personality software for mobile devices, called Toggle, to provide a walled-off and encrypted work environment within PCs and Macs as well as mobile devices.

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Toggle could save a lot of work and worry for enterprise IT departments, where concern about data security continues to grow, said Tolaga Research analyst Phil Marshall. And the idea of personalization could extend to many other areas, such as using multiple personas with different social-networking services, he said. "We're just hitting the tip of the iceberg on what can be done," Marshall said.