Abstract: A substantially conventional case for a CD is secured by a security tag. The security tag is formed from sheet material having an adhesive surface which is secured to both the lid and the base of the case to retain the case closed and to secure the CD therein. A security device is secured to the adhesive security tag. This security device is an article surveillance device detectible by detectors provided in gangway structures at the exits of retail outlets.

Abstract: The support prop consists of an outer robe (12) with an open flared mouth (14) into which a plunger (16) projects. A deforming ring (18) in use engages the plunger and is initially located within the flared mouth of the outer tube. A chamber (26) is provided within the prop into which fluid under pressure can be introduced through an inlet (28) to the chamber to locate the prop between two surfaces by displacing the plunger relative to the outer tube. A seal (24) is located within the chamber to prevent the fluid from escaping between the plunger and the bore of the outer tube.