| 摘要 |
A method, a combined cellular, PDA communication device and system having specialized software applications for allowing a plurality of combined cellular phone/PDA device users to monitor each others' locations and status, to initiate cellular phone calls by touching a symbol on the touch screen display with a stylus which can also include point to call conferencing calling. Each participant's cellular phone/PDA device includes a GPS navigation receiver with application software for point to call or conference call initiation to network participants and fixed facilities. The method, device and system also include several features that: (a) provides an individual the ability to establish public or private peer to peer networks and to assign the symbols and soft switches associated with the network; (b) allow individual cell phone/PDA device users to create a signal strength geo-referenced contour map; (c) permit each network participant to automatically request and download additional constantly updated maps that surround the network participant's fixed or moving locations from a server and (d) collapse the cell phone's soft switch matrix and readout areas so that after a fixed amount of user inactivity time, the map and superimposed symbols area will increase to occupy the soft switch and read out areas.
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