--- title: "External authentication methods" slug: "dpo-features-external-authentication-methods" updated: 2026-10-27T19:33:50Z published: 2026-10-27T19:33:50Z canonical: "docs.onespan.com/dpo-features-external-authentication-methods" --- > ## 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. # External authentication methods Many deployments continue to support password authentication as they add new passwordless authentication. DigipassONE authentication software supports passwords as an external authentication method, so the complete authentication flow can be orchestrated with DigipassONE’s Adaptive Authentication rules. Formerly Digipass S3 software. Formerly known as Digipass S3.