The PalaceHotel ecosystem is made of, basically, 3 main components:

• the PalaceHotel PIA (Personal Intelligence Agency), which aggregates personal data from many sources; this is a PHP-based project that is easily installed on commodity servers (much like a blog); it is very important that this data is stored and accessed in a decentralized way;
• an application to provide users with a GUI to allow the configuration and management of their Personal Data Repository (PIA).
• Personal Intelligence Services that talk with a user's PIA in order to get access to this information; thanks to OpenID, the PIA dispenses tokens on the users' behalf, which they can then revoke whenever they choose - such services are expected to be charged for;
• user-facing clients to provide visual or otherwise multimedia renditions of PI services data