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Very small android app
App configuration screen to hold a static but changeable full address and a position for a host Address and a terminal Code
Main app screen would only need to request a full address, pickup time and a passenger count
When submitted the app would post to a web service and return an estimated driver arrival time and cost
The app would be used by a cab company to schedule cabs
Mostly used behind a bar or night club by the bar tender [thus static pickup address] to request cabs for patrons.