There are two ways to register a security key: from the configuration tool or from the logon screen.
If your account has been deleted
If the currently logged-in Windows account has been deleted from the YubiOn FIDO Logon web management site, the registration operation cannot be performed.
For iOS and iPad OS, QR codes can be scanned with the camera app included with the OS.
For Android OS, the default camera app may differ depending on the device and carrier, and the QR code may not be scanned or passkey authentication may not be performed after it has been scanned.
If necessary, please install a QR code reading application from the Google Play Store.
To register from the logon screen, the following conditions must be met