We made this handy flowchart to explain to you (or your customers) how 3D Secure registration works, both before and during the checkout process.
3D Secure is a security feature where a shopper has to enter a password or a one-time pin (or OTP, sent to their email or mobile device) to complete the payment.
It is marketed as MasterCard SecureCode and Verified by Visa.
3D Secure registration before checkout
3D Secure registration during checkout
Links to register 3D Secure before buying online
FNB (PDF document)