YubiKey 5 Series
The multi-protocol workhorse. One key covering modern passwordless sign-in and the older systems you still have to support.
Overview
The YubiKey 5 Series carries the full protocol set: FIDO2 and WebAuthn for passkeys and passwordless sign-in, U2F as a second factor, PIV smart card for Windows login and certificate-based access, OATH one-time passwords for systems that only speak TOTP, and OpenPGP for signing and encryption. That breadth is the point — one device covers a mixed estate instead of forcing you to standardise everything at once.
Specifications
- Protocols
-
- FIDO2 / WebAuthn
- FIDO U2F
- Smart card (PIV)
- OATH-TOTP
- OATH-HOTP
- OpenPGP 3
- Challenge-Response
- Form factors
-
- USB-A
- USB-C
- USB-C + Lightning
- NFC
- Nano
- Durability
- IP68 rated, crush resistant, no batteries, no moving parts
Best for
Organisations rolling out phishing-resistant MFA across a mixed environment, where some systems support FIDO2 and others still require smart card or OTP.
Typical uses
Workforce MFA, passwordless sign-in to Entra ID and Google Workspace, Windows smart card login, privileged account protection, code and document signing.