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Information cards are personal digital identities that people can use online, and the key component of an identity metasystem. Visually, each i-card has a card-shaped picture and a card name associated with it that enable people to organize their digital identities and to easily select one they want to use for any given interaction. The information card metaphor is implemented by identity selectors like Windows CardSpace, DigitalMe or Higgins Identity Selector.
An identity metasystem is an interoperable architecture for digital identity that enables people to have and employ a collection of digital identities based on multiple underlying technologies, implementations, and providers. Using this approach, customers can continue to use their existing identity infrastructure investments, choose the identity technology that works best for them, and more easily migrate from old technologies to new technologies without sacrificing interoperability with others. The identity metasystem is based upon the principles in "The Laws of Identity".