The present disclosure relates to an electronic payment method and to an electronic payment system. A central server generates a secret number based on a payment card number. The central server associates the secret number with a transaction. A copy of the association between the secret number and the transaction is stored at a remote terminal. An access is detected at the remote terminal by acquiring the payment card number at the remote terminal. The remote terminal generates an identifier based on the payment card number. The remote terminal verifies whether the identifier matches the secret number. When the identifier matches the secret number, the remote terminal determines whether a provision of a product or service offered at the remote terminal is authorized based on a content of the transaction.