--- title: "Secure Payment Confirmation support" slug: "dpo-features-secure-payment-confirmation-support" updated: 2026-10-27T19:33:50Z published: 2026-10-27T19:33:50Z canonical: "docs.onespan.com/dpo-features-secure-payment-confirmation-support" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.onespan.com/llms.txt > Use this file to discover all available pages before exploring further. # Secure Payment Confirmation support DigipassONE authentication software supports Secure Payment Confirmation (SPC). SPC is a standard Web API that provides evidence, in the form of a signed SPC assertion, that the user has seen and approved the transaction details and cannot repudiate the transaction. Because the user's browser has privileged access to the authenticator, SPC transaction details are shown by the browser and not by your JavaScript code. Formerly Digipass S3 software.