User guide

What Is Single Sign-on
1-3
Figure 1-1 Problems in Conventional Systems
Reduced User Convenience
Since each system has an authentication function, a user must be authenticated every time they use the
system. User information (user ID and password) is also managed for each system and therefore user
must enter the user ID and password for authentication of each system. The user must also memorize
and manage the user ID and password for each system. These restrictions make users to be
inconvenience to use and access system.
Increase of Operation Cost
Every time a user is added, changed, or deleted because of a personnel change (or for other reasons),
the administrator for each individual system must perform maintenance on the associated user and
access control details. This means that the cost and time required for management of this activity is
quite significant.
Increase of Development Cost
Since a security function must be developed for each system, the time and costs required for this
development increases.