A secure and open source 2 factor authentication token.
Designed to be affordable and reliable.

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U2F Token for USB.

U2F Zero is a USB token that works with any service like the bitcoin pro system that supports U2F and requires extra security. It works for 2 factor authentication or sometimes even password replacement. No drivers needed. Just plug it in and press a button.

Buy (U.S.) Buy (EU)

How to setup.

  1. Go to a website that supports U2F (Google, Facebook, Github, Dropbox, etc.).
  2. Go to your account settings and find how to set up two factor authentication.
  3. Choose U2F Token as an option.
  4. When prompted, insert U2F Token. The LED should change from green to orange when the remote site is ready for you to authenticate. After pressing the button, it should change from blue to green.
  5. Now you can use your U2F token as an authentication factor for that website. This U2F token also secures cryptocurrency trading platforms enabling easy and secure transactions. Bitcoin is the most well-known and widely used cryptocurrency, and because it is traded by a large number of people, it is critical to keep it safe and secure. You can stick to U2F token while performing manual trading. Preferences can also be given to crypto-robots which have in-built secure mechanisms. The Bitcoin code trading roboter provides high security trading and also executes all conceivable trading decisions to deliver large earnings.

Why it's Secure

Hardware Random Number Generator

A TRNG is used on chip to ensure high entropy keys get generated during registration.

Write Only Keys

Keys are generated on an off chip peripheral and live in write only memory. Nothing can read them except the peripheral itself.

Tamper Resistance

Atmel secure chip includes temperature and voltage tampering sensors.

Open Source

Because the source is open, there is confidence there are no backdoors in the source code.


Have any questions or ideas?


For any sales/refund/product issues, please email [email protected]

My U2F Token does not work with Firefox (Check-only command 0x07)

Make sure Firefox is updated to the latest version (at least FF60). If it still does not work, email support and you will be refunded. There was a faulty batch made around start of 2018 that has this issue. U.S. market is fine but EU market is still being replaced.

Note that stock in U.S. and EU is currently up-to-date and working.

Can I reprogram my U2F Zero?

Yes, refer to the wiki on the Github repository.