YubiKey NEO is a small USB device supporting multiple authentication and cryptographic protocols. With a simple touch, YubiKey protects access to computers, networks, and online services for everyone from individual consumers to the world's largest organizations. YubiKey NEO works on Microsoft Windows, Mac OS X, Linux operating systems; and on major browsers. Note: If NFC is not required, we recommend you purchase the YubiKey 4 or YubiKey 4 Nano. Our latest generation YubiKeys and includes faster and stronger crypto compared to the YubiKey NEO.