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 smashIt on Mon 2nd Jul 2012 18:40 UTC in reply to "WTF IS THIS SHIT"
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Why not I dunno write some data to disk? Surely that would have been simpler.

simpler only if it works
if it doesn't it can destroy data

don't forget that you can't trust the kernel anymore when it KDLs

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