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A comment on I still use WordPerfect 6.2 for DOS. Parent comment

Re:I still use WordPerfect 6.2 for DOS by asveikau on Wednesday September 09, 2020 @01:49AM (#24417640)
I don't know the innards, but I don't think qr decode is that intensive. I seem to recall you can give popular open source decoders frame-at-a-time from a phone camera and it isn't really a bottleneck.
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Re:I still use WordPerfect 6.2 for DOS by earthboundkid on Wednesday September 09, 2020 @01:55PM (#24423765)
It's not that hard all things considered, but from a 90s PoV, it's a lot of work: you have to identify possible QR areas, deskew them, try the QR algorithm, see if it decodes to something, and then show a pop up on screen.

Compare that to the CueCat, which was made in 2000 and much more finicky about scanning: https://en.wikipedia.org/wiki/CueCat

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Re:I still use WordPerfect 6.2 for DOS by asveikau on Wednesday September 09, 2020 @02:20PM (#24424042)
Yeah but... People write libraries in garbage collected byte code languages, I have seen zxing (java) run on phones from 10 years ago much less powerful than today, and it can still get a decent framerate processing the camera without any special tricks.
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