Google has introduced a tiny USB device that offers hardware-based two-factor authentication for your online accounts with the highest level of protection against phishing attacks. The Titan Security Key is based on the FIDO (Fast IDentity Online) Alliance, U2F (universal 2nd factor) protocol and includes a secure element and a firmware developed by Google that verifies the integrity of security keys at the hardware level. The keys are available now to Google Cloud customers and will be available for purchase on the Google Store soon.
Source: https://thehackernews.com/2018/07/google-titan-security-key-fido.html