And in case you missed the first post, Apple had it long before the Tablet PC with the Newton...here it is again:
Apple was one of the pioneers in handwriting recognition technology with their Newton Personal Digital Assistant. While the original Newton contained a 3rd party handwriting engine that generated some early bad press, Apple later deployed their own much improved handwriting technology known as "Rosetta". Rosetta technology later found its way into Mac OS X under the name "Inkwell".
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