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Payments · 3-D Secure
Guides / Payments

3-D Secure

Every card payment on Inkress goes through 3-D Secure, the bank's own check that the cardholder is paying. There's nothing to build.

Where it happens

On Inkress's payment page. The customer's bank decides whether to ask them anything; often it approves without a prompt. You only see the result.

What counts as paid

Only a fully verified result can complete a payment, and Inkress confirms it with the card networks rather than trusting the customer's browser. An order is paid only after that.

Subscriptions

The first payment on a subscription sets up an authenticated agreement with the card networks. Renewals refer to it, so the customer isn't asked again.

Testing

Card numberWhat happens
4012 0000 0002 0071Visa. Approved without a prompt.
4012 0000 0002 0006Visa. The bank asks for a password: enter 3ds2.
4012 0000 0002 0121Visa. Authentication fails, so the payment is declined.
Was this page helpful?Updated Oct 8, 2026