The objective of this course is: The objective of this course is

Who are you? Is this information private or public?

One identity?

• SIP address-of-record (RFC 3674)?
• RFID tag?
• Electronic Product Code (EPC) – EPCGlobalNetwork – Object Naming Service (ONS)
• IETF Host Identity Protocol (HIP)

Multiple identities/avatars? Linked identities? Not a technological but a political question

From a technical point of view, identity management needs authentication

• through a third party (certificate, signature…)?
• through a challenge/response protocol?
•  need some common framework => often incompatible with the dynamic interactions of open systems
• through social recognition?
•  Trust and Reputation

Identity inference