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On the guess · Check, correct or withdraw what it guessed. · it guesses

Element 57

57●›
Op
Opt out

Tell it to stop guessing about you.

personalization off · do not track

First known

Opened

2000DoubleClick's opt-out cookie: set it and the ad network stops recognizing your browser from one visit to the next, so it stops targeting you.

See also: The NAI's industry-wide opt-out under its July 2000 principles; later Google's personalization switch (2005-09) and Do Not Track (2009-11).

“DoubleClick goes one step further by offering you a "blank" or "opt-out cookie" ... By denying the DoubleClick cookie, we are unable to recognize your browser from one visit to the next”

The opt-out cookie began at DoubleClick before the NAI made it industry-wide. Its exact start, probably in the late 1990s, is still unknown.

Someone opened the dated document itself. The source.

  • ReadingValue

Specimen № 57 — operate freely

Visit the shops, then the news. Opt out. Then opt back in.

Fig. 57 — Opt out

000 readings · idle

On the guess: its twin

  1. on the guessOpOpt out
  2. on the errandFnFence

The two series line up in pairs. Each act on a guess sits above the act that does the same thing to an errand, so Opt out and Fence are one move made on two kinds of thing.

Bodies

The act stays put while the hardware changes. These are some of the forms Opt out takes.

  • personalization off
  • do not track