From the previous studies, it seems that the best way to help users recover from interruption is to design the UI to constantly present obvious reminders about the existence and state of interrupted activities. However, the constant portrayal of information about interrupted tasks can negatively affect peopleÕs performance on their foregrounded activities. Noy (1989) found that providing auxiliary displays for navigation-like secondary tasks in an automobile simulator caused degradation in peopleÕs performance on the driving task. ...