Cookies that require a prior consent of the e-commerce visitor before use, are :
- -          cookies related to personalized advertising operations,
- -          cookies from social networks, in particular those generated by their sharing buttons,
- -          certain audience measurement tracers.
 In order for the consent is validit is necessary that :
- -           the information about the cookie in question is displayed in the info bar,
- -          that the consent is prior to the deposit of the cookie,
- -          that the consumer has the opportunity to withdraw consent at any time,
- -          and have the opportunity to exercise real choice.
For mandatory cookies, consent does not have to be given. These include :
- -          Tracers that retain the choice expressed by users on the deposit of tracers;
- -          Tracers for authentication to a service, including those for ensuring the security of the authentication mechanism, for example by limiting robotic or unexpected access attempts;
- -           Tracers intended to keep track of the contents of a shopping cart on a merchant site or to invoice the user for the product(s) and/or service(s) purchased;
- -          user interface customization trackers (e.g., for language selection or service presentation), when such customization is an intrinsic and expected feature of the service;
- -           tracers allowing the load balancing of the equipment contributing to a communication service;
- -           Tracers allowing paying sites to limit free access to a sample of content requested by users (predefined quantity and/or over a limited period);
- -          Certain audience measurement tracers as long as they respect certain conditions.