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Security campaign: Update your CERN access card by 31 January 2022

CERN access cards will need to be updated by 31 January 2022 for security reasons

All CERN access cards due to expire on or before 27 May 2026 must be updated before 31 January 2022. A warning banner on your personal ADaMs account will let you know if your access card is concerned.

The update, which consists in a quick (five to ten seconds) scan of your card, will be performed in one of three ways:

  • At the registration service office (Building 55, first floor);
  • At site entrances by security guards outside peak hours;
  • At restaurant entrances.

As of Monday, 22 November 2021, security checks at the site entrances (starting with Prévessin and the inter-site tunnel) will be slightly longer as security guards carry out the update on individual cards with each check.

As of 31 January 2022, entrance to the site will be denied to anyone carrying an outdated access card. In January 2022, reminder emails will be sent out to those who have yet to update their cards.