XPACML eXtensible Privacy Access Control Markup Langua

Privacy in the digital world is a critical problem which is becoming even more imperious with the growth of the Internet, accompanied by the proliferation of e-services (e.g. e-commerce, e-health). One research track for efficient privacy management is to make use of user´s and service provider´s (SP) privacy policies, and to perform an automatic comparison in between to help any (skilled or unskilled) users preserving their privacy.