Until recently, an individual's access to information was always tethered to a cable connection (either modem or ethernet), which typically limits it to desktop access. Cellular modems and wireless networking remained exotic technology, both because of high communication costs and the lack of truly portable equipment.

We are at the dawn of an era that breaks the cable tether to create a new class of devices that truly offer easy information access from anywhere and at any time.

The Palm Pilot 7 shown at the right is one of the first successful wireless computers. By employing a cellular modem service that is built into the palm-sized device, its users can send or receive information from any location within the range of cellular telephone service.

In addition, the cellular telephone manufacturers are launching new product lines that resemble a cell phone but include a small screen and input device to facilitate using your telephone as for web surfing. Some also combine paging services into a true multifunction portable telephone.

Meanwhile, wireless ethernet devices have improved to the point where they are now feasible for mass marketing. In September, 1999, Apple Computer was the first to offer this option, and most other hardware vendors have now announced similar products. The devices communicate at 11 Mbaud, with an effective range of up to 500 feet (less in most real-world settings). If a series of base stations were installed across campus, a student could travel anywhere on campus without ever losing network access.

Infrared networking devices also exist although this technology has not gained much acceptance. Most of the popular laptop models include an infrared communication port, but most users rarely take advantage of this feature.

Campus Implications
Wireless networking in the home