"GIS on the fly" to realize wireless GIS network by Java mobile phone

Java cellular phone has arrived in the marketplace as the latest device of mobile gear. The gear is very compact, allowing 10 KB for Java program size and 5 KB for data size. Although small in size, it features an innovative computer system architecture. The Java program can be sent dynamically to the gear in a streaming manner over a wireless network. In addition, compared to conventional mobile computers, Java cell phone is very cheap both in hardware price and in communication cost. Java cell phone has an enormous potential as mobile gear. We discuss our trial of constructing an extensive wireless GIS network by utilizing Java cell phone as a GIS terminal.