Verizon Wireless to Allow Complete Opt Out of Mobile 'Supercookies' - NYTimes.com

Also see Zombie Cookie: The Tracking Cookie That You Can’t Kill (ProPublica); I suspect we haven't seen the final chapter in this story yet

"But even if Verizon now allows subscribers to opt-out of having their online activities tracked using a unique customer code, that option may not satisfy privacy advocates who say consumers are unlikely to understand the implications of default tracking. Some say Verizon should have the feature turned off by default and require people to voluntarily switch it on.

“What they really should be doing is opt-in,” said Nate Cardozo, a staff lawyer at the Electronic Frontier Foundation."

Verizon Wireless to Allow Complete Opt Out of Mobile 'Supercookies' - NYTimes.com