No no, it does. Apple has bought trackpad company — was it FingerWorks? — that developed special HIDs for medical purposes. These things are a combination of pi

No no, it does. Apple has bought trackpad company — was it FingerWorks? — that developed special HIDs for medical purposes. These things are a combination of pickup and signal processing, therefore hw and sw, that provides many extra layers of data that will contribute. Basic tracking will work out of generally understood signals, but the nuance comes from those that only proprietary sw can render.