People are the outsiders in the current communications revolution. Computer hosts, pager terminals, and telephones are addressable entities throughout the Internet and telephony systems. Human beings, however, still need application-specific tricks to be identified, like email addresses, telephone numbers, and ICQ IDs. The key challenge today is to find people and communicate with them personally, as opposed to communicating merely with their possibly inaccessible machines.   The main goal of the Mobile People and IdentiScape projects is to put the person, rather than the devices that the person uses, at the endpoints of a communication session. From the Series:CSE Colloquia - 2000