FIDO  security keys are small USB dongles that enable secure login to websites and applications supporting FIDO2 WebAuthn and classic FIDO (U2F) standards. 

Token2 T2F2 security key combines hardware-based authentication, public-key cryptography, TOTP/HOTP, U2F, and FIDO2 protocols to protect your accounts. This type of security devices provides the highest level of multi-factor authentication of user accounts with Twitter, Facebook, Gmail, GitHub, Dropbox, Dashlane, Salesforce, Duo, Centrify and hundreds more HOTP, U2F, and FIDO2 compatible services. No additional tools or applications are required and the login process is simple and reliable. Just insert the Security Key into a USB-A slot and authenticate with a simple touch. We also sell a compact USB-A to Type-C adapter so you can use the same key with devices with USB-Type-C slots. The T2F2-ALU security key does not require a battery nor network connectivity so it is always on and accessible.

Token2 T2F2-ALU key is certified by the FIDO® Alliance

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Specifications

Model Number	Token2 T2F2-ALU
Functions	FIDO U2F + FIDO2 WebAuthn + HOTP (HID) + TOTP (with Companion app)
Embedded security algorithm	ECDSA , SHA256, AES, HMAC, ECDH
Interface type	USB-A + USB Type-C (with optional adapter)
Lifetime	At least 10 years
Programming cycles	100,000 times
Communication protocol	CTAP2, HID
Working voltage	5.0V DC
Input Currency	35mA
Power	0.18W
Working temperature	-10℃ - 50℃
Storage temperature	-20℃ - 70℃

Durability

An aluminum cover protects the USB connector when not in use. 

TOTP Feature

T2F2-ALU Security key can securely store the secrets for your TOTP profiles but requires a companion app (available for Android and Windows) to generate the OTPs. 

Token2 Companion app - Windows version

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Integration guides

Using Your T2F2 Security Key with Google

Passwordless authentication in Azure AD with Token2 FIDO2 keys

FIDO U2F security key for Stripe

Using FIDO2 USB keys under Linux