I saw this video on TED and it left my speechless. Here is a brief intro about it.
This demo — from Pattie Maes’ lab at MIT, spearheaded by Pranav Mistry — was the buzz of TED. It’s a wearable device with a projector that paves the way for profound interaction with our environment. Imagine “Minority Report” This Video will Leave you stunned!! and of course Dazzled! 
Honestly i hope somehow it ends up being open source or at least something in that area.
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Gadget used on retreiving info about people: Number one device to make people behave prejudiced. I would hate being filmed and “scanned” by any meeting.
Gadget used on retreiving info about products: sometimes useful, but I see here the trend to make most people not think. But everything is responsible for his one [not]-thinking…
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