This sounds incredibly exciting - QR Code, a Japanses invention, is basically a 2-D bar code.
"...QR Codes storing addresses and URLs may appear in magazines, on signs, buses, business cards or just about any object that users might need information about. Users with a camera phone equipped with the correct reader software can scan the image of the QR Code causing the phone's browser to launch and redirect to the programmed URL..."
And according to this post by Andrew, the real world implementations are slick and wonderful.
what would be do without innovation ?
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