New submitter ferro lad sends a story about Verizon's so-called supercookie, a unique identifier they add to web traffic going across their network to help advertisers target their ads better. A new article at Slate demonstrates how Verizon could fix the identifier so that ad companies would have a harder time misusing it — something they've already been shown to do. "...with just a tiny amount of effort, Verizon could maintain its current business while substantially preventing the misuse of its UID headers." Of course, for privacy-conscious users, the ability to get rid of them altogether would be preferable. Fortunately, Verizon now says users will soon have the ability to opt out of the identifiers. Previously, users could opt out of having their data shared with advertisers, but the unique identifier itself remained with their web traffic. It's not a complete solution — the tracking should be opt-in to begin with — but it's a step in the right direction.