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Capacitive touch does not work in cold weather when your wearing normal gloves. This does not matter much with eink screens because it stops working in cold. IR touch does not affect screen clarity and contrast. This is why it is used with ereaders as early eink screens had poorer contrast. Both type of screens can have multi touch gestures. Sony tried front light on one reader and it reduced contrast and made screen yellow. Better eink screens, light defusers and touch screens reduce or eliminate these problems.
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