yubikey
 

YubiKey is a key-sized device that you can plug into your computer’s USB slot to provide another layer of security when accessing your LastPass Account. YubiKeys are a secure, easy to use, two-factor authentication device that are immune from replay-attacks, man-in-the-middle attacks, and a host of other threat vectors.
Yubikey Finger Touch

Yubikey is a Premium feature, and the device must be purchased through Yubico.com for $25.

Limitations and Compatibility

Up to 5 YubiKeys can be associated with one LastPass account.

Yubikey Standard & VIP: works with all major browsers on Windows, Mac, and Linux computers with a USB port.

Update: LastPass add-on on mobile Firefox on Android now supports Yubikey authentication with a USB port (similar to how it works on desktop).

Yubikey Neo: works with all major browsers on Windows, Mac, and Linux computers with a USB port as well as Android devices that are NFC enabled.

 

See how the Yubikey works in the video below: