This authentication check is a further check when you purchase online in order to allow you bank to identify and validate the transaction. This system’s aim is to reduce the risks of fraudulent use of your bank card. Indeed, if you lose your card or if it is stolen, your bank card could not be used without your knowledge. You can receive your 3D Secure authentication code differently according to the banks. The one-time use code is usually sent by a text message, an email or via an electronic box you will be given by your bank. We invite you to get more information from your bank.