We are the original inventors and developers of "digital credentials." These can be thought of as the digital equivalent of the cards in one's wallet, enhanced with ultra-strong security and privacy properties. A digital credential can be presented to anyone in a manner that discloses only the absolute minimum required. Credential presentations can be verified off-line, that is, without connecting to a central party. Built-in cryptographic protections prevent unauthorized actions, such as replaying, discarding, lending, pooling, cloning, and online blackmailing.

Our first technology offering, U-Prove, was acquired by Microsoft, which released it from 2010 to 2014 under an open-source license in the form of software development toolkits and integration code.

Starting in 2015, the core U-Prove techniques were adapted by, among others, the Trusted Computing Group (for platform authentication) and the World Wide Web Consortium ("Verifiable Credentials"). These efforts replace the U-Prove issuing protocol by a "pairing-based" protocol in order to add a capability called "multi-show unlinkability." They also extend the revocation capabilities. However, these adaptations severely degrade the security and privacy protections of U-Prove, as well as its computational efficiency.

We have developed new cryptographic techniques that overcome these drawbacks and add security and privacy capabilities that address emerging requirements. We will remain in stealth mode until we are ready for a public announcement. Until then, this site will remain a pruned version of our old site around the time of the Microsoft acquisition.