June 2012
Beginner to intermediate
120 pages
2h 50m
English
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Introducing QR Codes
Here’s a trivia question for your next dinner party. What’s the QR in QR Code stand for? Answer: Quick Response. QR Codes are a quick way to access information. That was the intent when they were first used in the auto industry to track parts. No more tracking long serial numbers — just scan and go. It’s not surprising that businesses quickly saw the value of QR Codes on things other than fenders and bumpers.
Your basic QR Code, as shown in Figure 1-1, is a two- dimensional barcode comprised of small black squares within a larger square on a white background.
Figure 1-1: A QR Code.
You can access the information encoded on a QR Code with a smartphone equipped with a QR Code reader, as shown in Figure 1-2. The reader interprets the data on the code and redirects the phone’s web browser to a destination predetermined by the code creator.
You can put a QR Code just about anywhere, including in these places:
On a business card
On a billboard
In a book
On a poster
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.