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submitted 1 month ago by UraniumBlazer@lemm.ee to c/technology@lemmy.world

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[-] Semi_Hemi_Demigod@lemmy.world 32 points 1 month ago

I remember back when they first started getting popular I was at a conference and told a marketing person that we should make one instead of giving folks a long url. The marketing person said "I don't know if we have the budget to register one."

I used to think that this was because the marketing person didn't know how they worked, but now I know that they thought it worked like UPCs.

Shout out to Masahiro Hara for not asserting his patent rights so this incredibly useful tool could be free.

[-] catloaf@lemm.ee 3 points 1 month ago

If he didn't, one of the several other 2D barcodes would have caught on. I see non-QR ones around pretty often, though usually in industrial applications.

I remember back around 2009, there were a few of these in the newspaper: https://en.wikipedia.org/wiki/High_Capacity_Color_Barcode

I don't know how well it worked given the loose color registration. I didn't have anything that could read them at the time.

[-] echodot@feddit.uk 1 points 1 month ago

Are you sure they weren't just test colors? Most newspapers have them.

I cannot imagine what information they needed to encode that required that level of information density.

[-] Killer_Tree@sh.itjust.works 19 points 1 month ago

Very interesting video, I had no idea the level of redundancy built into QR codes. Thanks!

[-] UraniumBlazer@lemm.ee 12 points 1 month ago

Very interesting video, I had no idea the level of redundancy built into QR codes.

RIGHT?!! Same here. I didn't know there was SO MUCH of thought put behind QR codes. I always assumed they were just bits visually represented in 2D with the three black squares being there for alignment purposes. Turns out it is a lot more complicated than that hehe

Thanks!

Np <3

[-] 200ok@lemmy.world 6 points 1 month ago

Same! And now I know why my phone is able to scan a QR code, even when it's only partially in the frame/border that comes up.

[-] tournesol_bot@jlai.lu 1 points 1 month ago

This video is recommended by Tournesol community:
[31🌻] Veritasium: How do QR codes work? (I built one myself to find out)

#Tournesol is an open-source web tool made by a non profit organization, evaluating the overall quality of videos to fight against misinformation and dangerous content.

this post was submitted on 01 Oct 2024

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