[SOLVED]U2F Google Authentification (Chrome) with Yubikey under Ubuntu

Just bought this shiny FIDO U2F Security Key and tried out it on my Ubuntu with GMail.

At first time it wont work because one should do following:

Download or create a copy of this file named: 70-u2f.rules into the Linux directory: /etc/udev/rules.d/

https://github.com/Yubico/libu2f-host/blob/master/70-u2f.rules

now it's working ;)

Amazon: FIDO U2F Security Key