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This only supports my long running contention that normal people (outside of Japan) do not understand QR codes, and wherever they are printed, you would be better off writing a short URL. They are 1) opaque, 2) ugly, 3) impossible to memorize, 4) confusing to non techies and 5) no faster than typing the URL for the majority of viewers.

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I agree with your first four points, but how did you arrive at your fifth point? QR Code applications I've used scan in about 1-2 seconds (the time it takes to auto-focus), which I think is probably faster than typing a URL.

If you include the time it takes the download (or find) a QR Code app, it makes sense. Considering that neither iOS nor Android come stock with a reader.

Agreed, no doubt it takes time to set up a phone to read QR codes. I was more interested to see whether there was some link/study which compared the actually processes of typing vs. scanning, which I thought was the intent of his fifth point.

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