You will have received your Cornèrcard PIN separately by post. You can change it at any time at an ATM in Switzerland. To do so, select the function «Change PIN» and enter the desired numerical code. Avoid codes that are too obvious, such as your date of birth or your telephone number. Also, avoid sharing your PIN with third parties and memorise it instead of writing it down. If an expired card is reissued, the PIN will also remain unchanged for the new card.