device-bound passkeys

Device-bound passkeys are a phishing-resistant authentication method based on the FIDO2 standard, using public-private key cryptography tied to a specific device. Microsoft Entra ID has expanded support for device-bound passkeys, rolling out globally from mid-October to mid-November 2025, as part of a broader push toward passwordless security. This technology enhances enterprise security by preventing credential theft, as the private key never leaves the device. The US Department of Labor's Zero Trust framework also leverages Microsoft Entra ID for identity management, highlighting how device-bound passkeys fit into modern identity protection strategies. Discussions on WindowsForum cover deployment, security benefits, and integration with Microsoft's identity ecosystem.