Abstract: Disclosed is a computing device for use with touch input used by a user to input alphanumeric characters to the computing device. Included is a computing device made up of an electronic control unit in communication with a touch input device and a display screen. A database is stored in the electronic control unit. The database contains basic shape combinations correlated with alphanumeric characters. To input the basic shape combination, a user touches a basic shape, and slides to another basic shape. The computing device correlates the basic shape combination with an alphanumeric character. The electronic control unit is additionally configured to define a first border profile for each zone with a basic shape and to determine when a user is touching one of the zones and to change the first border profile to a second border profile for the zones adjacent the zone being touched by the user.