Multi-factor verification: 3D Secure for UK
As an added security measure, the Stripe gateway for UK credit cards includes 3D Secure (3DS), which requires customers to complete an additional verification step with their bank or card issuer when completing payments. A pop-up challenge window displays, asking the customer to either complete or fail the authentication.
Note: 3DS Authentication is only required in the UK and Euro regions.
Note: The challenge window presented to the cardholder varies by bank, so your challenge window may look different than the image above.
If the challenge fails, the payment is declined by the bank, and the cardholder needs to attempt the payment again.