Date Added: Feb 2012
This paper deals with the possibility to employ the user's time and space position information in the access management. Using the time and space information as new factors for authentication process is discussed in this paper. The authors have also considered the issues of indoor localization and possible application scenarios where these two additional authentication factors can be applied. They have developed the Multi-Factor Authentication Device (MAD I) together with active Infrastructure, which is required for indoor users' localization, to demonstrate the new main functions and advantages of adding time and space position to the user's authentication factors.