The Federal Communications Commission today announced a settlement resolving an investigation into Verizon Wireless’s practice of inserting unique identifier headers or so-called "supercookies" into its customers’ mobile Internet traffic without their knowledge or consent. >Verizon Communications will pay a $1.35 million fine and agreed to a three-year consent decree. The company agreed to get consumer consent before sending data about "supercookies" from its more than 100 million users, under a settlement.

Supercookies are unique, undeletable identifiers which are inserted into web traffic and used to identify customers in order to deliver targeted ads from Verizon and other third parties.

The FCC also said the supercookies overrode consumers privacy practices they had set on web browsers, which led some advocates to call it a "zombie cookie."

Under the agreement, consumers must opt in to allow their information to be shared outside Verizon Wireless, and have the right to "opt out" of sharing information with Verizon.