What is the use of Authentication?

Authentication provides an additional layer of security for online transactions, making it harder for fraudsters to gain access to your payment details.3. Is 3DS active on my card? Yes, your card has been enrolled in Mastercard SecureCode (3DS) so that wherever you see the Mastercard SecureCode logo online, your card number will automatically be recognised during checkout. Your card provider is contacted during checkout to confirm your identity as the genuine cardholder.