![I-Card Provider|http://wiki.eclipse.org/index.php/I-Card_Provider]
Higgins supports multiple kinds of i-cards with differing characteristics. It does so by using multiple kinds of i-card [providers|Provider of services], each of which implements one specific class of i-card. Although all i-cards implement the base "ICard" interface, some may implement one or more of the optional interfaces, and thus provide more or different characteristics.

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