The purpose of this tag is to call Criteo Identification Services and store the result in 2 first party cookies :
- crto_mapped_user_id : id of the user retrieved by Criteo
- crto_is_user_optout : information about if the user has opted-out of Criteo Retargeting
The lifetime of these cookies is 3 days, and no additional calls to Criteo Services are made if the cookies are already present.
Please get in touch with your Criteo contact to get your callerId, the only parameter for this Tag which is used for User Identification.