Verified by Visa and Mastercard SecureCode
Additional 3D Secure checkout functionality (Verified by Visa (VBV), Mastercard SecureCode, etc.) is currently available through three payment providers.
SagePay Form is an offsite payment provider which requires customers to complete checkout via SagePay's payment portal. Customers input their address details on your Shopify site as part of the normal checkout process, and then they are forwarded to SagePay to complete their payment.
The "Encryption Password" is not the same as your SagePay account password. The encryption password is a combination of letters and numbers, generally about sixteen characters in length, which is automatically generated by SagePay.
SagePay only gives this key to you once, on a page that they recommend you print out for future reference. If you don't have this page, you can contact SagePay customer support: http://www.sagepay.com/contact_us.
Shopify supports both SagePay and SagePay Form. You must select SagePay Form for 3D Secure integration.
WorldPay (Offsite) is an offsite payment provider which requires customers to complete checkout via WorldPay's payment portal. Customers do input their address details on your Shopify site as part of the normal checkout process, and then they get forwarded to WorldPay to complete their payment.
2Checkout is an offsite payment provider that lets Shopify merchants in 196 countries offer their customers a local buying experience with 26 different currencies and 15 different languages. Visit 2Checkout to learn how to integrate 2Checkout with your Shopify store.