Handling your card

Sign your new credit or prepaid card on the back immediately. Cut up your old card’s magnetic strip and chip.

Do not use personal data such as a date of birth or car registration number as your PIN code. Do not write your PIN code down anywhere and always conceal it when you enter it.

Please note:
If you write your PIN code on your card, store it in your wallet with your card or leave your card unattended (including in your car, when playing sport or in the office), this is negligent conduct and you may be held liable for any loss incurred.

Do not choose a password for "one" that you already use for other online accounts. The same applies to your e-mail account. Encrypt your passwords as much as possible.

Never disclose your card details (card number, expiry date, security code on the back of your card) for information purposes if you are not placing an order or making a booking by phone. Requests for card details and passwords by e-mail or phone are generally not to be trusted. Delete these e-mails immediately without clicking on any links or opening any attachments.

Contact us immediately if you lose your card or you notice any sign of misuse. The emergency number of Viseca’s 24-hour cancellation centre is: +41 58 958 83 83.

Never let third parties distract you or even “help” you when you are using a machine. Notify your bank or the police if you notice anything suspicious about a machine (ATM, ticket machine, automated refuelling machine). Have your card blocked immediately if it is retained by a machine.

Check your spending wherever and whenever with the "one" digital service and the "one" app. If there are any discrepancies, contact our Customer Service immediately.

Every time you make a payment, check that the amount is correct before you sign or enter your PIN code.
Always enter the amount under “Total” if it has not already been printed or entered. Always draw a dash in front of the amount.

Keep all confirmations of orders, bookings, returns and cancellations as well as any correspondence between you and a merchant. You will need these documents if you make a claim or complaint.

When you register your card in an app store, please check the settings to see whether in-app purchases have been intentionally activated. There are various types of automatic charges: game currency, experience points, upgrades, activations, maps for navigation systems, subscriptions, etc. Find out about these terms and conditions before you install an app.