People's work days are filled with exceptions to normal routine. These exceptions affect the security and privacy of their information access and sharing. In a recent ethnographic study of ten users in the Bay Area, we identify a number of key problems not well addressed by current data sharing technologies, and from them derive requirements for Ad-hoc Guesting, our term for minimal, readily available access control addressing situations not planned for in advance.
Brinda Dalal, Les Nelson, Diana K. Smetters, Natha