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Note: This article lists the technical specifications of the YubiKey Bio - FIDO Edition. If you're looking for setup instructions for this key, see https://yubi.co/bio.
The YubiKey Bio - FIDO Edition provides the FIDO2 application as well as the U2F application, allowing for greater flexibility.
Interface
The YubiKey Bio - FIDO Edition uses a USB 2.0 interface. All applications are available over this interface.
Applications
U2F
The U2F application can hold an unlimited number of U2F credentials and is FIDO certified.
FIDO2
The FIDO2 application allows for secure single and multi-factor authentication, and can store up to 25 resident credentials. These credentials, which are protected by user verification (PIN or fingerprint), enable passwordless login, where the YubiKey, unlocked by user verification and authorized by touch, can log you in to your accounts without entering a username or password. The FIDO2 application is FIDO certified.
To find out if an application is compatible with the YubiKey Bio - FIDO Edition, browse to the Works With YubiKey Catalog, and in YubiKey drop-down, select YubiKey Bio Series to only display services that are compatible with it.
Physical Specifications
Form Factor
Connector: USB-A
Dimensions: 18mm x 45mm x 3.35mm
Weight: 4.5g
Temperatures
Operational range: 0 °C to 40 °C (32 °F to 104 °F)
Storage range: -20 °C to 85 °C (-4 °F to 185 °F)