mediarithmics tracking capabilities rely on first-party cookies, third-party cookies, and local storage variables to identify browsers and capture their activity.
Cookies installed on the third-party domain .mediarithmics.com
These cookies are created on the third-party domain .mediarithmics.com (or on the custom domain if used).
Cookie name
Description
Life duration
mics_vid
mediarithmics third-party cookie identifier
1 year
mics_lts
The last time the browser has been seen
1 year
mics_uaid
Legacy cookie that will be deprecated
1 year
chk
In the case of a call on events.mediarithmics.com without a cookie mics_vid, this cookie is written to check that the user browser supports third party cookies. It contains a randomly generated UUID.
1 hour
Cookies installed on the first-party domain
These cookies are created on websites where mediarithmics javascript tag is installed.
Cookie name
Description
Life duration
mics_vid
Duplication of mediarithmics third-party cookie identifier bearing the same name. Used for caching purposes to avoid unecessary calls.
1 year
mics_lts
The last time the browser has been seen
1 year
mics_<site_token>
First-party identifier for the browser (also called "installation ID")
1 year
Local storage variables on the first-party website
Local storage is only used on websites where mediarithmics javascript tag is installed.
Key
Description
_mediarithmics
Per site token: lastFeedRefreshDate
Is created only if you have added the syncFeeds
<site_token>_mics_up
This variable is only present if the Edge feature is activated.
It stores user data, structured as a user point model, including device characteristics, the browsing history on the first-party website and the segments to which the user belongs to.
mics_sgmts
This variable is only present if the Edge feature is activated.
It stores the list of segments to which the user belongs to (duplicate from the above one).
Description of the javascript tracker behaviour
The list of calls is generated by the javascript tag.