Electronic tags, known as cookies, can be used to track an individual's movements on the Internet for a number of years. The information commissioner is concerned that the unauthorized use of such intrusive technology could breach data protection principles within the U.K.
"If organizations are going to put lots of computer code on a machine that tracks a person's movements online, individuals should be told about it," said Iain Bourne, strategic policy officer to the information commissioner. "This shouldn't be happening until they have agreed to it." --Wendy McAuliffe, ZDNet UK