OpenSSH has added support for universal two-factor authentication.
The OpenSSH codebase has added experimental support for two-factor authentication using devices that support the U2F protocol, developed by the FIDO Alliance. U2F allows for the creation of inexpensive hardware tokens to confirm the user's physical presence, interfacing via USB, Bluetooth, or NFC. Such devices are promoted as a means for two-factor authentication on websites, are already supported by major browsers, and are being released […]
