1. An apparatus comprising: at least one device processor; and at least one computer readable storage medium storing instructions which, when executed by the at least one device processor, cause the at least one device processor to: operate a keyboard configured to implement shape-writing of words and radial entry of individual characters; obtain input data identifying an input to the keyboard that is directed to a primary character, the input moving in a specific direction usable to select an auxiliary character associated with the primary character; evaluate the input data to disambiguate whether the input is a shape-writing input to enter a particular word or a radial entry input to enter the auxiliary character; in a first instance when the input is disambiguated as the shape-writing input, enter the particular word, the particular word including the primary character; and in a second instance when the input is disambiguated as the radial entry input, enter the auxiliary character associated with the primary character.
7. The apparatus of claim 1 , wherein the instructions, when executed by the at least one device processor, cause the at least one device processor to: determine, from the input data, an observed pressure of the input; and disambiguate the input data based at least on the observed pressure of the input.