Oooooh. Thanks for that information about the Jot. That's remarkably good advertising showing the smartphone on the webpage like that, I have to admit. Regardi

Oooooh. Thanks for that information about the Jot. That's remarkably good advertising showing the smartphone on the webpage like that, I have to admit. Regarding the Sync, I suspect it contains the same electronics as the Rip in order to do the sync thing, and a touch panel. Based on the other comments I've read in this thread that explain how "writing" on screen (and "ink" showing up) is entirely mechanically driven, ie, the pressure on the surface of the display displaces the crystals and makes whatever you draw stay on the screen. Applying a voltage for a short moment somehow causes the crystals to reset. I'm not sure why the display itself wasn't made writable. It's entirely possible Kent Displays simply couldn't find a viable way to market a (MCU-)writable version of this technology, and so they went in this direction instead; it's also possible that ChLCD (developed up to the point Kent have it at) doesn't have the capability to be addressed reliably. I have no idea. I based my hunches above about how the Boogie Board resets on something I saw on TV a while ago, which I just determined is classified variously as "switchable privacy glass", "electrified privacy glass" or "intelligent glass". I learned (from the house-construction TV show) that it's essentially a single, gigantic (!) LCD "pixel", and I saw (in one of the construction stages) how simply plugging it into the wall and turning the wall switch on was what made it go from opaque to transparent. Obviously it's a fair jump from this to the Boogie Board reset mechanism, but it seems reasonable that some of the same ideas are used in both.