AT&T Inc. , which last week stopped a controversial test practice of tracking mobile customers' activity through a hidden tracking number that can't be deleted, said customers can now opt out of future AT&T smartphone tracking system, according to media reports. AT&T spokeswoman Emily Edmonds told The USA Today its "mobile Relevant Advertising opt-out site is still live" even though it has no such program at the moment, adding users can opt out to possible future tracking. A similar practice begun by AT&T rival Verizon Wireless remains in place, the paper reported, adding there's no evidence two other major U.S. wireless providers have a similar practice.
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