Last October I attended the W3C privacy workshop and contributed a paper and gave an overview presentation of the IETF GEOPRIV architecture. The document might be helpful for people working on location-based services (where privacy plays a role). Note that some details might not be correct anymore since we updated the Geolocation
Henning gave a presentation at the NetCri 2007 workshop about LoST. An overview paper is also available. In short, LoST is used to map location information and a service identifier to a service contact URI. In the context of emergency services this is useful to determine the PSAP URI that is responsible
Interested in emergency services & security? Here are my slides corresponding to the paper from the NetCri 2007 workshop.