FIDO Alliance is a set of open and scalable standards that enable simpler and more secure user authentication across websites and mobile services. The aim is to provide a standard for the entire industry leading to better compatibility and more ease of use. Currently, there are a variety of options for users to log in to their services and devices. The most common ones are divided up into these categories:Knowing a PIN or TAN code (ATM withdrawals, money transfers) or access to an email account (when verification codes are sent by mail) or mobile devices that can scan a login code for one time use (Authy, Google Authenticator)”]
Source: https://blog.malwarebytes.com/security-world/2018/10/fido-future-instrument-prove-identity/