Tactus Technology has presented a nice addition to touch screen technology - physical buttons that rise up from the surface on demand, and then recede back into the screen, leaving a perfectly flat, transparent surface when gone.
How? Using a 1-mm-thick Tactile Layer containing tiny channels of non-toxic fluid, managed by a small internal controller that adjusts the pressure of the different portions liquid, causing the buttons to rise up or down. Along with all of the other benefits, we think it’s a great way to introduce braille to existing touch screens.
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