Touchscreens are great, but they don't offer much in the way of feedback. Phones can buzz, sure, but that's only useful as a notification. Hap2u gives touchscreens a layer that produces tiny vibrations you can feel with your finger, opening up a whole new set of interactions. The company is talking with phone manufacturers about integrating its 2-micrometer-thin haptic layer, so don't be surprised if flagship devices soon sport smart physical feedback.

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