Cookie policy

In accordance with the provisions of article 22.2 of the Law on Services of the Information Society and Electronic Commerce, users are informed of the type of cookies used by the website owned by ONCE ( the "Website"), indicating if they are owned by the ONCE or a third party, their duration as well as their purpose and the possibility of disabling them through the configuration of the browser.

What are cookies?

A cookie is a file that is downloaded to your computer when you access certain web pages. Cookies enable a web page, amongst other things, to store and retrieve information about the browsing habits of a user or his or her device and, depending on the information they contain and the way in which they use their device, they can be used to recognize the user.

For the period of time that they remain activated in the terminal equipment, cookies can be session (designed to collect and store data while the user accesses a Website page) and persistent (when the data is still stored in the terminal and can be accessed and treated during a period defined by the person in charge of the cookie, and which can range from a few minutes to several years).

Depending on the entity that manages the computer or domain from which the cookies are sent and which processes the data obtained, there are cookies owned by the owner of the website or publisher and third parties.

According to their purpose, cookies may be technical, for personalization, analysis, advertising and behavioural advertising. ONCE only uses some of these cookies, as explained below.

What type of cookies does ONCE use on the event website?

On the Website, ONCE uses three types of cookies depending on their requirement:

2.1. Technical cookies

ONCE uses certain cookies that are technically necessary in order to enable communication between the user’s device and the network or to provide a service expressly requested by the user, such as session and user login cookies, user authentication or identification cookies, the security of the user, the multimedia player session, cookies for load balance sessions, the personalization of the user interface or plug-in to exchange content.

The technical cookies used are ONCE’s own cookies and session cookies, which expire when the user finishes browsing and closes the browser.

These cookies cannot be deactivated since their essential use is for registered users to access the Website and to complete their registration through the form that is offered through it. Although these cookies are exempt from the user's consent, ONCE wishes to draw attention to their existence and purpose for greater transparency.

2.2. Browsing analysis cookies

ONCE also uses browsing analysis cookies, both its own and those of third parties, session and persistent, which are intended to track the number of users who visit the Website in order to undertake measurements and statistical analysis of the use made by users of the information offered through it.

The application that ONCE uses to obtain and analyse the information provided by browsing analysis cookies is Google Analytics. This application has been developed by Google Inc., which is the provider that provides ONCE with the analysis service for the Website audience. You can find more information about Google Analytics and disable the use of these cookies at:

In addition to ONCE's use of the statistical information provided by these cookies through Google Analytics and Google Inc., they also use the same information to improve their own services and offer services to other companies. You can learn more about the purposes for which Google Inc. uses this information by clicking on the link in the previous paragraphs. ONCE disclaims any responsibility for the use that Google Inc. makes of this information.

The Google Analytics tool does not obtain data of the names or surnames of the users or of the specific physical address from which they connect or any other personal data from these. The information obtained through this tool is related only to aggregated and anonymous data such as the number of page views, the geographical area assigned to the IP address from which the event's Website is accessed, the number of users who visit it, the frequency and recurrence of the visits, the visit duration, the browser and the version of it that users use, the operating system installed on the user's equipment or the operator or type of terminal from which they perform the visit.

ONCE also uses persistent cookies from the Flocktory provider in order to identify browsers that have accepted to receive push notifications and to be able to send these notifications through the browser. Flocktory will not process the information generated by these cookies for their own purposes.

Finally, ONCE uses persistent cookies from the Selligent provider in order to track users who access the Website. Selligent will not process the information generated by these cookies for their own purposes.

2.3. Advertising cookies

ONCE may use session advertising cookies, its own and those of third parties in order to enable the management, in the most efficient way possible, of the advertising spaces that ONCE decides to include on the Website, based on criteria such as the edited content or the frequency in which ads are displayed.

You can find more information on advertising cookies through the following cookies detail link.

Personal data protection

The information obtained by ONCE through the cookies used on the Website relating to the user’s equipment is not combined with their personal data.

Configuring the browser to allow, block or deactivate cookies

Most browsers allow you to modify the configuration of cookies, which are usually activated by default.

These settings are usually found in the “Options” or “Preferences” sections of the user’s browser menu, under the “Privacy” or “Browsing history” section. For more information, you should consult the “Help” section of the browser in question.

If you therefore want to allow, know, block or eliminate the cookies installed on your computer you can do so by configuring the browser options installed on your computer. In the following links, you can find information on how to configure these options in case you use any of the following as a browser:

The deactivation of the use of cookies in your browser may cause some services or functions of the Website not to work or to do so in a slower manner.

User’s consent to the use of cookies by ONCE

The user authorizes and consents to the use of cookies on the Website for the purposes described above, as well as for the association and combination of their personal data with the information generated by cookies in the specific cases described above, as follows:

  • When the user accesses the Website, a clearly visible warning about the use of cookies on the Website shall be displayed at the top of the home page, which will include a summary of its purposes, as well as the warning that the user can accept or reject the use of cookies by configuring his/her browser, with a link to this Cookie Policy to obtain more information about it.
  • If the user does not configure their browser so that cookies are not activated, by continuing to browse the Website and use their services, it will be understood that the user accepts the use of cookies on the Website and the purposes for which they are used.

Therefore, when browsing the Website, the user has the opportunity to accept or not the use of cookies. Even when initially accepting their use, at any time the user may revoke their consent to the use of cookies on the Website, removing cookies from their computer equipment and configuring their browser to deactivate them in the future.