Due to the entry into force of the relevant amendment of the «Law on Information Society Services» (LSSICE) established by Royal Decree 13/2012, it is mandatory to obtain the user’s express consent for all websites that use expendable cookies, before he sails through them.


Cookies and other similar technologies such as local shared objects, flash cookies or pixels are tools used by Web servers to store and retrieve information about their visitors, as well as to provide a correct functioning of the site.

Using these devices allows the Web server to remember some data concerning the user, such as their preferences for viewing the pages of that server, name and password, products that most interest them, etc.


According to the EU directive, cookies that require informed consent by the user are analytics cookies and advertising and affiliation cookies, except those of a technical nature and those necessary for the operation of the website or the provision of services expressly requested by the user.


There are five main groups of cookies:

  • Analytical cookies: collect information about the use of the website.
  • Social cookies: these are necessary for external social networks.
  • Affiliate cookies: allow you to track visits from other websites, with which the website establishes an affiliation agreement (affiliate companies).
  • Advertising and behavioural cookies: collect information on the preferences and personal choices of the user (retargeting).
  • Technical and functional cookies: these are strictly necessary for the use of the website and for the provision of the contracted service.


  • PHPSESSID: technical and strictly necessary cookie that contains the session ID. It is deleted when closing the browser.
  • _lang: technical and strictly necessary cookie containing the language of the session. It is deleted when the browser is closed.
  • ac_cookies: technical and strictly necessary cookie containing the value of whether the installation of cookies has been accepted. It expires in 1 year since the last update.
  • _utma: Google Analytics cookie that records the date of the first and last time the user visited the website. It expires at 2 years since the last update.
  • _utmb: Google Analytics cookie that records the arrival time to the website. Expires 30 minutes after the last update.
  • _utmc: Google Analytics cookie used for interoperability with urchin.js. tracking code.
  • _utmt: Google Analytics cookie. This cookie is used to process the type of request requested by the user. It expires at the end of the session.
  • _utmv: Google Analytics cookie. This cookie is used to segment demographic data. It expires at the end of the session.
  • _utmz: Google Analytics cookie that stores the traffic source or a campaign to explain how the user arrived at the website. Expires 6 months after the last update.


  1. Select the Tools icon.
  2. Click on Settings.
  3. Click Show Advanced Options.
  4. In the «Privacy» section click Content Settings.
  5. Delete cookies: Click All cookies and site data…
  6. Do not allow cookies to be stored.
  7. Click Delete Browsing Data (Clear Cache).
  8. Close and restart the browser.

For more information on Chrome click here:

Internet Explorer. Versió 11

  1. Select Tools | Internet Options.
  2. Click the General tab.
  3. In the «Scan history» section, click Delete scan history on exit.
  4. Select Delete files.
  5. Select Delete cookies.
  6. Click on Delete.
  7. Click OK.
  8. Close and restart the browser.

For more information on Internet Explorer click here:

Firefox. Versió 18

  1. Select Firefox | History | Clear Recent History.
  2. Next to «Details», click the down arrow.
  3. Select the following checkboxes: Cookies, Cache, Active logons
  4. Using the «Time interval to delete» in the drop-down menu, select All.
  5. Click Delete now.
  6. Close and restart the browser.

You can accept or reject cookies individually in Firefox Preferences, in the History section available in Tools > Options > Privacy.

For more information about Mozilla Firefox click here:

Safari Versió 15.2

  1. Select the Safari icon / Edit | Restore Safari.
  2. Select the following checkboxes: Clear history, Delete all website data
  3. Click on Reset.
  4. Close and restart the browser.

For more information on Safari click here:


Options – Advanced – Cookies.

The cookie options control how Opera handles them and therefore their acceptance or rejection.

For more information on Opera click here:

Microsoft Edge

  1. Open Microsoft Edge and select Settings and more > Settings > Privacy, search and services.
  2. Under Delete scan data, select Choose what to delete.
  3. Under Time interval, choose a time interval.
  4. Select Cookies and other site data and then Delete Now.

For more information on Edge click here: 20cookies. %20Abre%20Microsoft%20Edge%20y,otros%20datos%20del%20sitio%20y%20luego%20Borrar%20ahora