Google’s $50 Titan security keys are now available in the US
 

Last month, Google introduced its Titan Key -- a physical security key used for two-factor authentication -- and now it's widely available in the US. For $50, you'll get a USB security key and a Bluetooth security key as well as a USB-C to USB-A adap...

https://www.engadget.com/2018/08/30/...-available-us/