Yubikeys

• Developed by Yubico in Sweden

• Completely open-source - no vendor lock-in

• Small, robust, easy to use, cheap, no batteries

• Looks to a computer (laptop/desktop/server) like a USB keyboard

• Generates a 44 character OTP each time the “button” is pressed

• Security based on secret AES 128-bit keys

• No need to type anything - does it for you