Face as a QR Code

The blog just leads to https://research.swtch.com/qr/draw/, which is the demo page of the blogs [1] and [2] written by Russ Cox many years ago about putting pictures in QR codes by manipulating the error correction codes in them

[1]: https://research.swtch.com/qart [2] https://research.swtch.com/field

	▲	madethemcry 6 hours ago \| parent \| next [-]
		Hey thanks a lot, that should be the actual link behind the submission. Very interesting technique that boils down to encode a url with a ton of carefully shaped random numbers hidden in the fragment to generate the actual art. That's the example url from the linked blog introducing this technique http://swtch.com/pjw/#123456789... Source Code (Go) is here: https://github.com/rsc/qr/tree/master/qart
	▲	extraduder_ire 4 hours ago \| parent \| prev [-]
		Messing with that demo page, it seems to manipulate the URL you put in there too adding some numbers after an anchor tag (#) at the end, rather than just error correction.

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nusl an hour ago | parent | prev | next [-]

Made me wonder how easy it is to embed QR codes inside everyday images/objects without them being visible until you scan the object.

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isoprophlex 6 hours ago | parent | prev [-]

Does this mean you could make a gif which is a valid QR code playing Bad Apple?

	▲	hcaz 5 hours ago \| parent \| next [-]
		Yes: https://www.reddit.com/r/touhou/comments/ueo304/i_played_bad... https://news.ycombinator.com/item?id=40377122
	▲	TOMDM 5 hours ago \| parent \| prev [-]
		A series of QR codes that each link to the next frame of bad apple is the logical conclusion to me