Multi-Touch Input Platform

This document describes tools having or interacting with a touch-sensitive device with one or more contact detectors that detect a tactile input from a user making contact with the contact detectors and an input/output module that persistently identifies contact data representing the detected tactile input. This identification is unique, thereby differentiating one or more tactile inputs from other current tactile inputs represented in the contact data. Using this unique identification, the input/output module can initiate an application to provide a function, such as data entry or a mapped function, associated with the detected tactile input. These data or mapped functions may, in many instances, provide a greater depth or breadth of functions by which users may interact with applications and computer systems.