Looking after your card

To keep your UdS Card functioning properly, please follow the care instructions detailed on this page. Special precautions are needed to prevent damage to the antenna, the chip and the thermal read/write (TRW) laminate.


  • Avoid scratching the surface of the card.
  • Bending the card may cause the antenna to break, rendering the card useless.
  • Keeping the card in a wallet or trouser pocket can cause the card to become permanently curved, preventing it from being read when drawn through a card swipe reader.
  • Chemicals (dry cleaning agents, detergents, etc.) will destroy the surface of the card and the TRW laminate.
  • High temperatures, such as those found in parked cars in summer, can also have a detrimental effect on the TRW laminate, which is written on using a thermal printing technique. If the TRW laminate is erased by the action of excessive heat, the damage can be rectified in most cases by revalidating the card.

To help protect your UdS Card from damage, we recommend keeping the chipcard in a protective case. A transparent protective case allows you to present the card for identification purposes without having to remove it from the case. Transparent card cases will be available free of charge from the card issuing offices from 15 September 2004.

If the card fails to function properly, it will be assumed that this is due to improper use or inadequate care. Replacement cards will be issued to the card owner at a cost of €10.