4.

The competent security authority, applying the concept of defence in depth, shall determine the appropriate combination of physical security measures to be implemented. These can include one or more of the following: a perimeter barrier: a physical barrier which defends the boundary of an area requiring protection; intrusion detection systems (IDS): an IDS may be used to enhance the level of security offered by a perimeter barrier, or in rooms and buildings in place of, or to assist, security staff; access control: access control may be exercised over a site, a building or buildings on a site or to areas or rooms within a building. Control may be exercised by electronic or electro-mechanical means, by security personnel and/or a receptionist, or by any other physical means; security personnel: trained, supervised and, where necessary, appropriately security-cleared security personnel may be employed, inter alia, in order to deter individuals planning covert intrusion; closed circuit television (CCTV): CCTV may be used by security personnel in order to verify incidents and IDS alarms on large sites or at perimeters; security lighting: security lighting may be used to deter a potential intruder, as well as to provide the illumination necessary for effective surveillance directly by security personnel or indirectly through a CCTV system; and any other appropriate physical measures designed to deter or detect unauthorised access or prevent loss of or damage to EUCI.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.