Linked by Thom Holwerda on Mon 2nd Jul 2012 18:19 UTC, submitted by anonymous
BeOS & Derivatives Michael Lotz added code to generate QR-code for the KDL (Kernel Debug Land) ouput (which pops up when the kernel crashes). No more blurry photos with debug output, but a QR code which decodes to the clear-text KDL debug output. Here's one of the relevant commits, an example showing a QR code, and text from decoded sample QR code.
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by umccullough on Mon 2nd Jul 2012 19:17 UTC in reply to "RE: WTF IS THIS SHIT"
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"Who thought this was a good idea?

Lets use a smart phone to decode the error message ... Why not I dunno write some data to disk? Surely that would have been simpler.

Right, because that's going to work reliably when the kernel panics.

Well, to be fair, most people don't even know what a kernel panic is - or what it means...

Most OSes just do something fancy, like 'bluescreen', or reboot.

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