Brent Simmons — “Each Generation is Doomed to Reinvent the CueCat”:
Here’s the thing about the CueCat: it wasn’t that the hardware sucked, it’s that people aren’t going to scan things to go to a web page.
I've never heard of the Cue Cat, but the Wikipedia article is fascinating to me in that I'm pretty sure you could actually replace every instance of “Cue Cat” with “QR Code”, and it would still be pretty accurate. I'm yet to see any person in real life scanning a QR code even though I see them everywhere.