Ghost Fingers was an emerging pattern I put in my new book Designing Gestural Interfaces, in Chapter 3: Touchscreen Patterns. Ghost Fingers is when a device becomes seemingly transparent so the users can “see” (onscreen) their fingers on the back of or inside of the device. Since it was a new pattern, I had a bit of trouble finding examples for it. But recently, two great example products have appeared.

nanoTouch is a project from Microsoft Research that notes, “the key to touch-enabling very small devices is to use touch on the device backside.” PDF. (via Touch User Interface)
Noriyo Asano tipped me off to another example from Japan. Bandai (known for its Tamagochi products) has just released a toy called Tuttuki Bako, which means “a box for poking.”

Apparently, this pattern isn’t emerging any longer. Look for it on a device near you soon.
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I find this a really interesting trend and can imagine it will spread to other applications pretty fast. It seems to combine the magic of X-Ray specs with interaction. On a side-note, I can help feeling little boys will be popping their willies into that Bandai thing. Maybe that’s just me.
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