Security-Tokens security fobs

Secure Office 365, Outlook.com, Hotmail.com, OneDrive, Microsoft accounts from Hacking and Identity theft using Microsoft Authenticator App No doubt you are already using MFA (Multi-Factor Authentication) or 2FA (Two Factor Authentication) or 2SV (2-step verification) for Online Banking, Government Services, Xero and many other online services. But did you know it can also be used