Affiliations: Graduate School of Media and Governance, Keio
University, Fujisawa Kanagawa 252-8520 Japan | Sony Corporation, Shinagawa Tokyo 141-0001
Japan | Tokyo Research Laboratory IBM Japan, Yamato Kanagawa
242-8502 Japan | Faculty of Environmental Information, Keio University,
Fujisawa Kanagawa 252-8520 Japan
Abstract: This paper proposes "Zero-stop Authentication" model and system,
which realizes automatic, real-time authentication in the physical world.
Applications in the physical environment such as those at library gates and
supermarket counters could benefit from automatic authentication of users.
These applications need to detect users using embedded sensors, and
authenticate them, and bind objects to them, in real-time. To accomplish such
real-time user authentication, model of user mobility, and methods to bind
objects to users are required. This paper models and formulates the user
mobility and time constraints, and proposes three techniques to correctly bind
objects to users. A Zero-stop Authentication System built based on this model
is also proposed, which automatically detects and authenticates users, and
relates objects to them. The feasibility of real-time authentication is
estimated using the model, and error is issued if the check fails. We also
describe prototype implementation of the system, and two applications. Secure
Library System uses ZSAS to authenticate users at library exits, and bind books
to users. Secure Printing uses ZSAS to detect users approaching a printer, and
to authenticates them, in order to print documents only when their owner
approaches the printer. It protects private documents from being overlooked or
removed.
