Mobile Computing
Most computer users are connected to networks, and have access to data and devices on those networks. They connect to the Internet and communicate with other users via electronic mail. They work in collaborative groups in which they share schedules and other information. However, when users hit the road, they can lose contact with the people and resources they are accustomed to working with.
More reading:
http://www.acm.org/crossroads/xrds7-2/intro72.html
http://www.ittoday.info/Articles/Introduction_to_Mobile.htm
http://www.doc.ic.ac.uk/~nd/surprise_96/journal/vol4/vk5/report.html
http://www.nwc.com