Light writer an iPhone App that lets you write and draw in thin air
LED vision peripherals have been in the market since quite some time. 'Light Writer - POV Effect' from Laan labs allows you do the same, i.e. write on thin air using the iPhone. You just type in your message or select a piece of clipart, wave your arm in the air (night works best). Available for $1 at the app store it is completely worth it.
(More images after the jump)
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