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That means AT&T Wireless customers managing their accounts through the company's Web site are now able to more easily understand what personal data AT&T collects about them and how it uses that information, the companies said.
AT&T Wireless has also become a sponsor of Truste's efforts to expand privacy protections to new wireless devices. Truste is a non-profit privacy seal group.
AT&T Wireless, which split from AT&T last spring, recently completed its certification allowing it to display the Trustee seal.
"Consumer education about privacy issues is critical to establishing consumer confidence," said J Walter Hyer, chief privacy officer at AT&T Wireless. "As our customers begin using their wireless phones to communicate in new ways... they must also be informed and in control of how their personal information is treated."
Truste spokesman Dave Steer said his group and AT&T Wireless were working together to build a coalition of other industry players - including other carriers as well as wireless equipment makers - to expand online privacy protections to mobile phones, digital assistants and other devices that collect personal information.
Steer said the coalition of industry groups, government and other privacy organisations would work to establish a set of standard privacy symbols - first proposed by Truste last summer - that would define online privacy policies for Web sites and wireless devices.