One of the applications for generic Android tablets which I’ve tried to find solutions to, mainly in the form of apps, would have been, for note-taking. And this quest has largely remained unsatisfied. I’d like to comment on Why.
When I wanted to use my tablet for note-taking, the way I visualized doing this, was to be able to jot down notes by hand, as if on paper. The idea seemed natural, that a tablet could store many pages of notes, without requiring that the user carry with him, stacks of sheets and binders.
But the main impediment I saw with this actually stemmed from the hardware itself, that is sometimes just referred to as the Glass of the tablet, or otherwise, as the Sensor. Most common tablets have a capacitance-based Sensor, which is best-suited, for detecting the proximity of a human fingertip. A necessary variation in its use is, a passive stylus, which does little better, than to focus electrostatic fields, as any shaped, conductive object would. This type of stylus requires no special hardware from the tablet to work, and can also be bought from virtually any manufacturer, and can remain compatible with the standard sensor.
The problem with that which ensues, is the fact that actual software – i.e., apps – try to implement a feature which is called ‘Palm Guard’, ‘Palm Rejection’, or ‘Wrist Guard’. This feature recognizes the fact that when people try to write on any surface, we usually have a tendency to rest the side of our hand on the same surface. The capacitance-based sensors cannot distinguish between contact with a human hand, and the point of the stylus. The ability of the software to make the same distinction is only as effective, as the ability of the sensor to be hugely multi-touch in the ‘contact-map’, that it inputs.
(Updated 12/26/2018, 12h00 : )