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I wonder if the resolution issue could be improved by combining inertial sensing in the stylus with the position data from the capacitive display. You should be able to get sub-"pixel" resolution by using multiple sensors this way, though I'm not sure how well it would work in practice, with inertial drift, etc. It might be pretty good though! Worth trying I bet.



I would be willing to bet they are doing some kind of inertial modeling in their stroke dynamics right now. There is some kind of "Dynadraw" algorithm in their now that is smoothing and adjusting stroke thickness. Some it seems to be based on pointer velocity, but there is something else going on that I can't quite put my finger on ... as it were.




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