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Before you can use the targeting feature, you need to decide how to identify a visitor as a unique individual. The unique identification process of visitors can be done in several ways within Adhese (with or without cookies), depending on the client's preferences and needs and the platform or device being used.

The most prevalent way is to save a cookie in the browser of the visitor's device (client-based). The same cookie enables the identification of the visitor as unique when he or she returns to your website. 

Adhese can apply different levels of visitor identification. Initially, an anonymous visitor gets a session ID. If the visitor logs in to the publication at a later moment, the session ID can change into a login ID (which is of higher quality). The latter solution enables Adhese to target the same registered visitor across multiple platforms and apply, for instance, frequency capping.

Other solutions are technically possible as well and they can be even more desirable in some situations. It is possible to identify visitors by not using cookies at all, that is to say: cookieless. Instead, you enclose the URL with unique parameters to identify the visitor.

Do not forget that the unique identification of visitors and the storage of personal and other data is subject to national, European and international legislation. It is the exclusive responsibility of the publisher to comply with the law and to adequately notify the user of its rights. Adhese can assist and advise publishers herein.

Please note that you cannot add unique visitors together. The number of unique visitors of a channel position is not equal to the sum of unique visitors of all the individual positions of that channel.

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