The HPI Identity Provider is an identity provider (https://openid.hpi.uni-potsdam.de) which allows students and employees from HPI to use their HPI identity with services and web applications inside and outside the HPI. Each user is assigned an OpenID, which s/he can use right away to authenticate with several Web Sites that support  OpenID (as e.g. www.tele-task.de). Furthermore each user can download a “digital passport” representing its identity, a so-called InformationCard, and use it to authenticate with web services or web sites supporting the InformationCard technology.

Users can manage several identities within a single account, such as for example a private identity beside an identity holding its business data. Each identity is composed of a limited set of attributes, that the user can add, modify and delete. As information which is entered by the users is usually not considered trustworthy, there is the option to verify certain attributes in the identity provider. For example to provide a verified email address the user can choose between presenting a trusted email certificate or receiving a verification email from the provider. Upon successful verification, the user can use this trusted attribute at other web pages that are willing to rely on the verification done by the HPI IP.