In two weeks, it will become obligatory for all people on the CERN site to wear visible ID badges at all times. Everything you need to know about this new policy is available here: https://home.cern/cern-people/official-communications/2018/03/visible-wearing-badge-instructions-0
Official News Information
Members of the personnel shall be deemed to have taken note of official news published for the CERN community. Reproduction of all or part of this information by persons or institutions external to the Organization requires the prior approval of the CERN Management. The full list of official news is available here.