On 15 March, it will no longer be sufficient for credit card payments online to only need the card number, the expiry date and the check digit, now strong customer authentication is required. Other EU countries have already implemented this additional security for customers earlier than Germany.
In the future, two out of three factors will be necessary to be able to pay online. The three factors are credit card information, confirmation of knowledge of a password, and inherence, meaning that the user proves something that is specific to the buyer, such as a fingerprint. Providers are solving this by sending a transaction number (TAN) to the buyer’s mobile phone, which must be entered during the payment process.
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