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The touchscreens on smartphones do not respond to the touch of the thumb the way keypad phones do. As such, it is more difficult to type accurately when you are on the move – for example, during a bumpy bus ride. E-ink and screen-float technology could bring a three-dimensional revolution to mobile phones. Messizon shows how. Rather than a touch-phone, it is a touchable phone.
LI Ke, YE Feng