What is not included on any platform (Android, iPhone or Windows) is a built-in QR code scanner.

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It doesn't hurt to acquire a code scanner, or download engine-diagnostic apps for a smartphone, experts say.

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The 9 million users of the most popular QR code scanner for the iPhone scan just 4, 000 QR codes per day.

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BECs are as unimaginable at the moment as the supermarket bar-code scanner would have been to the inventor of the laser.

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Paid QR code scanner apps generally do away with this advertising, however they require annoying updates to be made and of course require small fees.

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And while being able to look up the contents of your fridge as you enter the supermarket sounds compelling, knowing that the owner has to manage the list manually (there's no UPC code scanner and RFID is still just a dream) tarnishes our enthusiasm quite a bit.

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Leverage the QR code technology so that I can easily wave my phone over a scanner and buy something.

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