1. One or more computer storage media encoded with instructions that, when executed by a processing unit, perform acts comprising: acquiring time sequential, ink data for a handwritten East Asian character; producing conditioned ink data that comprises information as to a writing sequence of the handwritten East Asian character; extracting features from the conditioned ink data, the features comprise at least one of a tangent feature, a curvature feature, a local length feature, a connection point feature, or an imaginary stroke feature; and using a Hidden Markov Model to provide an East Asian character that corresponds to the features being extracted.