Locks and Keys Service


Tel: +41 22 767 66 58 or 7 90 82

E-mail: Locks.keys@cern.ch

Location: 56-R-006

Opening hours: from 07h30 to 17h30 rfom Monday to Friday


The Locks and Keys Service is responsible for the administrative and technical management of the keys and cylinders, distributed by CERN to users, for all the buildings on the site.

Management of keys on the Admin e-guide

It ensures that the locking schedules and management of master keys are respected.

All key requests should be addressed to the requestor’s departmental secretariat for approval.

 A key is assigned strictly to one person and is the responsibility of its registered user.

Users may not lend or exchange keys or pass them on directly to their successors, but must return them to the Locks and Keys Service for registration.


In the event that key(s) are lost or stolen, duplicates can be made only when the loss or theft has been declared and the user’s departmental secretariat has submitted a new key request.

Declaration of loss or theft

Requests for a change of cylinder should be made through the departmental representative and sent to the Locks and Keys Service to be processed.