Style: For Single PC'sInnovation, quality, and trust have made the standard in device security for more than 25 years. is expanding that expertise to data security by introducing the world's first fingerprint security key to support Windows Hello and Fast Identity Online (FIDO) universal 2nd-factor authentication (U2F) the Mark Fingerprint Key. Engineered to provide simple, fast, and secure Windows logon and a seamless two factor authentication experience, the Mark Fingerprint Key protects against unauthorized access on compromised devices, while also offering unprecedented cybersecurity for today's cloud-based world.