Cookies

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.

URL	Description
static.mediarithmics.com/tag/1/tag.min.js	mediarithmics static javascript tag. Contains the implementation of methods used in the snippet.
events.mediarithmics.com/v1/conf.js	Configuration parameters regarding the tag on the website. Also contains a randomly generated first party identifier ("installation ID")
events.mediarithmics.com/v1/sites/<site_token>/external_feeds	Checks if the user belongs to a segment with a tag feed attached
cookie-matching.mediarithmics.com/v1/gather_id	Starts the cookie-matching process with Google and Xandr (if activated)
cookie-matching.mediarithmics.com/input	Ends the cookie-matching process with Google and Xandr (if activated) by inputting the ID
cookie-matching.mediarithmics.com/v1/getids	Asks for the creation of a mediarithmics third-party cookie identifier (mics_vid). If cookie-matchings with partners are configured, the response will install pixels for those partners.
events.mediarithmics.com/v1/visits/pixel	Create a tracking event in the datamart related to the site.

The following additional calls are made if the Edge feature is activated.

URL	Description
events.mediarithmics.com/v1/device_info.js	Allows the translation of the browser UserAgent into device characteristics.
static.mediarithmics.com/tag/2/evaluator.min.js	Downloads the local segment evaluator.
events.mediarithmics.com/v1/sites/<site_token>/segment.js	Downloads the definition of Edge segments.

Other redirects that might happen in the process

URL	Description
events.mediarithmics.com/v1/check_cookie/pixel
events.mediarithmics.com/v1/update_mapping/pixel
cookie-matching.mediarithmics.com/v1/get_or_create