The Thetis FIDO2 Fingerprint Security Key is the essential way to protect your personal online accounts from hacking, phishing, and more. Built with an embedded fingerprint sensor for an extra style of passwordless protection, FIDO2 is the passwordless security of the future. Full backwards compatibility with websites that follow U2F protocols and HOTP multi-layered authentication. ADVANCED FINGERPRINT SENSOR Embedded fingerprint sensor for a passwordless solution to online accounts. VARIOUS POPULAR SYSTEMS Works with popular operating systems: Windows, MacOS, Chrome OS. HOTP TECHNOLOGY HOTP (One Time Password) creates a multi-layered authentication process. ONE-TOUCH SECURITY Advanced One-Touch Security to prevent hacking, phishing, and scams. U2F BACKWARDS COMPATIBILITY U2F backwards compatibility with any website following U2F protocols. 360° COMPACT DESIGN 360° design with aluminum alloy frame to avoid scratches and drops.