FIDO2
FIDO2 is a set of open authentication standards developed by the FIDO Alliance to enable passwordless and multi-factor authentication (MFA) using public key cryptography. It consists of two main components: the WebAuthn API for web browsers and the CTAP protocol for authenticator devices like security keys or biometric sensors. This technology allows users to log in securely without passwords, reducing the risk of phishing, credential theft, and other common attacks.
Developers should learn and implement FIDO2 to enhance security in applications by eliminating passwords, which are vulnerable to breaches and phishing. It is particularly useful for high-security environments like banking, healthcare, and enterprise systems, as well as consumer-facing services seeking to improve user experience with biometric or hardware-based logins. Adoption helps comply with modern security best practices and regulations like NIST guidelines.