LID is a quite simple, but powerful technology that empowers individuals to keep control over and manage their on-line digital identities. LID uses URLs as identifiers, is fully decentralized and supports multiple underlying protocols such as OpenID, Yadis and PGP/GPG. LID functionality can be easily added to a URL that you own already, such as your blog. It's also very simple, interoperable, extensible, and secure. It is the original URL-based User-centric Digital Identity technology.
