To protect yourself against fraud involving your card, you can sign up to an additional security solution, known as Dankort Secured by Nets / Verified by Visa / MasterCard SecureCode, used by many online retailers. To activate your card, you will need to link a mobile phone number to the card.
In future, Nets will use that mobile phone number to send you a text message containing a one-time password when you need to pay an online retailer that uses the Dankort Secured by Nets / Verified by Visa / MasterCard SecureCode security solution. You then need to use the one-time password to confirm that you are performing a transaction using the card you have activated in the security solution.
The following pages take you through the steps required to link your mobile phone number to your card, and to change or delete your mobile phone number for a card that has already been activated.
Note that you will need to use your NemID for the rest of the process.
You can read more about making secure online payments here.