3DS (3D Secure) is a network security verification mechanism promoted by international card organizations such as Visa and MasterCard.
Please note that 3DS verification is usually initiated by the merchant during the checkout process, rather than being manually set by the cardholder. If you do not see a verification page or encounter issues during payment, we recommend contacting the merchant to confirm if their platform supports 3DS or checking if your card meets the merchant's specific risk control requirements.