YubiKey - The authentication token from Yubico
YubiKey as a smart card on iOS - Yubico
Yubico Yubikey 5C NFC Review: Better two-factor authentication
Get Certificates from a YubiKey using PowerShell - darrenjrobinson - Bespoke Identity and Access Management Solutions
Yubikey 5/5C NFC Card Holder single and Dual Token Options Available
Yubico Launches 'YubiKey 5C NFC' With USB-C and NFC Support
This is the ultimate security key. Here's why you need one
Yubico - YubiKey 5C NFC - Two-Factor authentication (2FA) Security Key, Connect via USB-C or NFC, FIDO Certified - Protect Your Online Accounts : Electronics
Yubico YubiKey 5 NFC Two Factor Authentication USB and NFC Security Key for sale online
Get started with YubiKey 5 Series - Yubico