In the recently released Microsoft Edge v142.0, Microsoft has introduced cross-platform passkey synchronization, a feature that allows users to seamlessly reuse their passkeys across multiple devices without the need for repeated setup — a remarkably convenient improvement for everyday use.
A passkey, in essence, is a secure authentication credential that theoretically should be registered separately for each device. However, for the sake of usability, both browsers and password managers have begun implementing passkey synchronization, significantly reducing the number of passkeys a user must manually register.
In practical use, when users enable password and key synchronization within Microsoft Edge, they are prompted to create a dedicated PIN upon generating their first passkey. This PIN is required for all subsequent passkey-based logins, ensuring that no one can access saved passkeys simply by using the same computer — an additional safeguard against unauthorized access.
The feature requires Windows 10 or 11, Microsoft Edge version 142.0, and a signed-in Microsoft account. Interestingly, Microsoft also appears to be developing a third-party browser extension that would allow other browsers to access passkeys already stored in a user’s Microsoft account.
This means that in the near future, users could potentially use Microsoft’s passkey extension in browsers like Chrome or Firefox, enabling secure cross-browser authentication and further enhancing the convenience and accessibility of passkey technology.
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