What is FIDO2?
FIDO2 is a set of standards that lets you log into websites and apps without typing a password. It uses things like fingerprint scanners, security keys, or facial recognition to prove who you are.
Let's break it down
- FIDO2: The name of the technology; “FIDO” stands for Fast IDentity Online, and the “2” means it’s the second version.
- Standards: Rules that different companies agree to follow so everything works together.
- Log into websites and apps: Sign in to online services like email, banking, or social media.
- Without typing a password: No need to remember or type secret words.
- Fingerprint scanners, security keys, facial recognition: Common devices that can check your identity.
- Prove who you are: Show the service that you are the real account owner.
Why does it matter?
Passwords are easy to forget, reuse, or get stolen, leading to hacks and data breaches. FIDO2 removes the need for passwords, making online accounts much safer and easier to use for everyday people.
Where is it used?
- Online banking apps that let you log in with a fingerprint or a hardware security key.
- Corporate single sign-on (SSO) systems, where employees use a phone or badge to access many work tools.
- Popular websites such as Google, Microsoft, and Dropbox, which support FIDO2 for password-less login.
- Public services like government portals that are starting to adopt password-less authentication for citizens.
Good things about it
- Strong security: Hard for attackers to steal or guess.
- Convenience: No need to remember or type passwords.
- Phishing resistance: Fake sites can’t trick the authenticator.
- Works across many devices and platforms thanks to common standards.
Not-so-good things
- Requires compatible hardware (e.g., fingerprint reader or security key).
- Initial setup can be confusing for non-technical users.
- Some older websites and services still don’t support FIDO2.
- If you lose your security key or device, you need a backup recovery method.