The use of zombie cookie for targeting advertisement by smartphone which can not be erased by the user seems to be stopped

Suitable for each user of smartphone or tablet deviceTargeting adInternet advertising company which had advertised by advertising the so-called "zombie cookie" which can not be deleted by the user himself in order to deliver itTurnHowever, we now suspend the use of zombie cookies.

Turn - 'Zombie' Cookie ID to be suspended pending re-evaluation
https://www.turn.com/blog/zombie-cookie-id-to-be-suspended-pending-re-evaluation

Zombie Cookies Slated to be Killed - ProPublica
http://www.propublica.org/article/zombie-cookies-slated-to-be-killed

In the winter of 2014 smartphones and tablet terminalsCode "Unique Identifier Header (UIDH)" to track user behaviorIt was revealed that there was a possibility that this UIDH could violate the privacy of the customer, and American major telecommunications companies AT & T and Verizon were denounced. In response to a major criticism, AT & T ceased using UIDH, while Verizon continued to use UIDH, Verizon misused the UIDH information of Verizon and used it for delivery of targeting advertisements It is Turn.

ByDan_H

Turn delivered the targeting advertisement by using the fact that Verizon terminal has UIDH which can not be deleted by himself, supplementing user information from UIDH information when the target user's ID cookie is missing. In other words, as long as Verizon does not stop using UIDH, Verizon users have no way of escaping Turn's target advertisement.


After that, the fact that the zombie cookie for the targeting advertisement by Turn is actually operatedConfirmationAnd as a result of a lot of blaming voices received by Turn's method, finally, Turn executives stopped using zombie cookies by blog by early FebruaryAnnouncementDid.

Nonetheless, unless Verizon ceases to use UIDH due to "UIDH can not be tricked into personal identifiable information such as user name, email address, phone number, credit card number", target UIDH It seems not to be a fundamental solution to prevent services that are exploited in advertisements.