Abstract: An optical storage system capable of use as a business card or a credit card of a rectangular card lying flat against an optical storage medium which can have a circular track for the optical storage of data. Symmetrical fastening elements around the whole optical storage medium secure the card and the optical storage medium together in two positions at right angles to one another. In one position the system has a rectangular configuration corresponding to that of a card. In the second position arcuate ends of the optical storage element lie along the longitudinal edges of the card to enable the system to be placed in a reader or writer for the optical data.

Abstract: The invention relates to a system comprising two elements. The first element is an optical storage medium which has the form of a circular disc having two parallel cutting edges of segments that are cut symmetrically in relation to the center. The second element is a rectangular card, especially formed from a synthetic material, having the size of a business or credit card. Said card, together with the optical storage medium, can be inserted into a disk drive of a writing and/or reading appliance. The inventive system comprises means which enable the two elements to be fixed in two positions in which said elements are rotated towards each other when the card (1) and the storage medium (3) are placed flat one upon the other.