- Keep your card away from strong magnetic field
 - Store it under normal room temperature and in a clean environment.
 - Use a card holder to protect your card against bending or scratching.
 
  | - Do not flip, flap or fold the card
 - Avoid scratching the surface of the card, especially the surface of the chip.
 - Do not try to apply electricity to the chip
 - Do not put stickers (e.g. photos) on the card surface, the increase in card thickness, and the dust and residuals left on the chip surface may cause rejection of your card.
 - Do not hold your CU Link and another smart card (e.g. Octopus Card) together over the smart card reader at the same time
 
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