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 strong security and privacy properties. A digital credential can be presented to anyone while disclosing the absolute minimum required. Relying parties can verify credential presentations 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 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 adopted by 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 "multi-show unlinkability." However, this adaptation severely degrades the integrity of the U-Prove technology.

We have developed a new technology that provides all the capabilities of U-Prove while adding not merely multi-show unlinkability but also new capabilities that greatly enhance the usefulness of digital credentials. 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.