AT&T on privacy: Sidley Austin’s Peter Keisler, representing AT&T, is urging a federal appeals court to address consumers’ privacy rights in reviewing whether the authorities must first obtain a warrant to obtain cell site location information from a service provider. Read AT&T brief here in the U.S. Court of Appeals for the Eleventh Circuit, which will hear the case en banc.

“The third party records cases may provide an unsatisfactory basis for resolving this case,” AT&T’s amicus brief said. “Smith and Miller rested on the implications of a customer’s knowing, affirmative provision of information to a third party and involved less extensive intrusions on personal privacy. Their rationales apply poorly to how individuals interact with one another and with information using modern digital devices.”