The parking card comprising a circular flat plastic disc (1), with an embedded electronic chip for storage and processing of entered parking data. At the peripheral edge of the disc is a ring (2) of a different material, exhibiting a different stiffness and/or wear resistance to that of the central disc. Pref. the ring has a U-shaped cross-section for fitting around the complementary edge of the central disc. The opposing arms of the U lie flush with the surface of the disc, and project from this surface, or taper along their length between a point above the adjacent surface of the disc and a point in the plane of the disc surface.
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