Exploring a New World of Identity With Identity 2.0 Based Solutions

On the Internet today, account registration is nearly always a requirement to interact with any website in a meaningful way. Each digital identity a user creates is a new and completely disjoint identity from all other existing digital identities of the user. These traditional identities, Identity 1.0 identities, are site-centric and centralized. Alternatively, Identity 2.0 identity solutions are completely decentralized and user-centric. This paper presents four different examples of user interaction using Identity 2.0 based solutions that weren't possible within a traditional identity framework: Greylisting, identity multiplexing, user-centric privacy, and site preregistration.