Titan Security Key - FIDO U2F USB-C NFC Bluetooth - Google Store
Google USB-C/NFC Titan Security Key (K40T) (Used) - Walmart.com
Amazon.com: Yubico - YubiKey 5C Nano - USB-C - Full Featured, Multi-Protocol - Two Factor, Multi-Factor, and passwordless Security Key - IP68 Water and dust Tight - Designed to Stay in Port : Electronics
Amazon.com: Yubico YubiKey 5C - Two Factor Authentication USB Security Key, Fits USB-C Ports - Protect Your Online Accounts with More Than a Password, FIDO Certified USB Password Key : Electronics