FIDO2 strengthens security and protects individuals and organizations from cybercrimes by using phishing-resistant cryptographic credentials to validate user identities. FIDO2 is the latest open authentication standard developed by the FIDO Alliance, an industry consortium of Microsoft and other technology, commercial, and government organizations.

What is FIDO2? FIDO2 enables users to leverage common devices to easily authenticate to online services in both mobile and desktop environments. The FIDO2 specifications are the World Wide Web Consortium’s (W3C) Web Authentication (WebAuthn) specification and FIDO Alliance’s corresponding Client-to-Authenticator Protocol (CTAP).

FIDO2 is the evolution of FIDO U2F, and offers the same improved level of security based on public key cryptography. FIDO2 offers expanded authentication options including strong single factor (passwordless), two factor, and multi-factor authentication.

May 24, 2018 · Essentially, FIDO2 is the passwordless evolution of FIDO U2F. The overall objective for FIDO2 is to provide an extended set of functionality to cover additional use-cases, with the main driver being passwordless login flows. The U2F model is still the basis for FIDO2 and compatibility for existing U2F deployments is provided in the FIDO2 specs.

Apr 10, 2025 · FIDO2 also emphasizes greater inclusivity across platforms and devices. 2. Browser and platform support. The compatibility of FIDO2 with various browsers and platforms is a key aspect of its widespread adoption. Major web browsers like Chrome, Safari, Firefox, and Edge support the WebAuthn API, enabling authentication experiences across ecosystems.

FIDO2 (also referred to as FIDO) is an advanced version of U2F that focuses on providing a robust, passwordless login experience. Both U2F and FIDO2 offer the same level of cryptographic security. However, FIDO2 introduces WebAuthn and CTAP, two protocols that enable cross-device and cross-platform passwordless authentication.

Nov 20, 2018 · Read on for the big picture of how the W3C WebAuthn and FIDO2 CTAP2 specifications interact. We will start with the industry standards perspective, and then at the end we will summarize how Microsoft implements the various roles.

Sep 30, 2024 · FIDO2 is the newest set of specifications from the FIDO Alliance. It enables the use of common devices to authenticate to online services on both mobile and desktop environments, using unique cryptographic login credentials for every site. Essentially, FIDO2 is passwordless authentication.

Jan 31, 2023 · FIDO2 is the latest specification of the non-commercial FIDO Alliance (Fast Identity Online), which was created with the aim of developing open and license-free standards for secure, worldwide authentication on the World Wide Web.

FIDO2 is the passwordless evolution of FIDO U2F. The overall objective for FIDO2 is to provide an extended set of functionality to cover additional use-cases, with the main driver being passwordless login flows. The U2F model is still the basis for FIDO2 and compatibility for existing U2F deployments is provided in the FIDO2 specs.