We are the original inventors of "digital credentials." These are the digital equivalent of the cards in one's wallet, enhanced with privacy and security features. The presentation of a digital credential reveals only the essential attributes required by a relying party, while eliminating correlation handles. Cryptographic measures prevent replay attacks, discarding, lending, and pooling. Digital credentials can be securely bound to smartcards, RFID tags, IoT nodes, and other constrained devices.

Our first offering, U-Prove, was acquired by Microsoft, and released from 2010 to 2014 in the form of software development toolkits and integration code. In 2015, the core techniques were adopted by the Trusted Computing Group (for platform authentication) and the World Wide Web Consortium ("Verifiable Credentials"). To enable "unlimited-show unlinkability," these initiatives rely on a pairing-based issuing protocol that impairs U-Prove's efficiency, functionality, and security.

We have developed a superior technology with powerful new capabilities, and are gearing up for a relaunch. Until a public announcement, this site will continue as a pared-down version from the Microsoft acquisition period.