Google's two-factor authentication hardware key, the Titan Security, has been available in the US for almost a year. After disappearing from the Store for a few months and a Bluetooth flaw that required Google to send free replacements, it's now making its way to four other countries.

The Titan Security Bundle contains two keys: the USB-A security key with NFC, and the battery-powered, Bluetooth/NFC/Micro-USB key. It follows the U2F (Universal 2nd Factor) standard, and lets you secure your accounts with a physical key only you have access to. It's now available on the Google Store in these countries:

If you need to know more about what these security keys do, how well they work, and whether they're worth the money, you should read Ryne's review. And if you're an enterprise administrator, there's an option to order these in bulk in Canada, Japan, and the US.