How OpenX tracks user activity
Last updated on July 20, 2016
For managing any type of per-user activity, including frequency cappingUsing cookies to track the impression count of ads served and stop any given ad being shown to a single visitor more than the set number of times., conversion tracking, and audience
segmentation, OpenX employs a single cookie to uniquely identify a given user on a given browser,
across multiple ad requests. This cookie (either OX_u or
i, depending on the domain used to fetch ads), contains a unique value, but contains no
personally-identifiable information. Any data stored on OpenX servers, which is required to support
features like frequency capping and segmentation, refer to this unique userA site's total number of users or visitors over a certain length of time. Accuracy depends on each user logging in with a unique cookie to access the site, such as a different browser. id.
When a user opts out of tracking, OpenX does not remove or alter their identification cookie. This cookie must be maintained to continue to support frequency capping and other features unrelated to any sort of behavioral tracking. Instead, OpenX employs a separate opt-out cookie.
If you are using OpenX Ad Exchange, behavioral targeting by Ad Exchange buyers is also disabled for users who have opted out.