this post was submitted on 30 Sep 2024
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Technology

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YouTube: https://youtu.be/w5ebcowAJD8

Invidious, alternative YouTube link without YouTube: https://inv.nadeko.net/watch?v=w5ebcowAJD8


Video description:

How do QR codes work? The checkerboard patterns taking over the world, demystified. Go to Saily.com/veritasium and use the code ‘veritasium’ to get an exclusive 15% off your first purchase.

Special thanks to Mashiro Hara and Yuki Watanabe.

00:00 I was wrong 00:49 How Morse Code revolutionized communication 03:57 How barcodes work 10:34 How QR codes store information 18:16 Why damaged QR codes still work 29:54 Why are QR codes so common? 31:21 How safe are QR codes? 32:25 The future of QR codes

top 8 comments
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[–] yessikg@lemmy.blahaj.zone 1 points 1 day ago

Scammers love them too

[–] perishthethought@lemm.ee 9 points 2 days ago (1 children)

Who has time to hate things like QR codes?

[–] thingsiplay@beehaw.org 4 points 2 days ago

Redditors maybe?

[–] Gaywallet@beehaw.org 23 points 3 days ago (1 children)

My fav application is scanning with a phone to immediately get on wifi

[–] skullgiver@popplesburger.hilciferous.nl 6 points 3 days ago (1 children)

While that works pretty well, I find it strange how little people use the ability to tap an NFC tag to instantly connect. Getting the camera pointed at a code only takes a second but tapping a sticker is even quicker.

I guess most people don't know about that feature.

[–] Gaywallet@beehaw.org 11 points 3 days ago

I find NFC stickers often require an annoyingly close connection (unless it's a rather large antenna) and can be particularly finicky with certain cases and other attachments people put on phones. Realistically they both take approximately the same amount of time and it's way cheaper to print a tag than it is to buy a single NFC sticker

[–] mp3@lemmy.ca 13 points 3 days ago (1 children)

I use them for our printed version of our documentation, each document has a cover page with a QR code pointing to the latest version of the electronic copy.

Handy during an outage, and you don't have to search for the online copy.

[–] Crotaro@beehaw.org 2 points 1 day ago

Smart! If my company ever digitises enough to make this a possibility, I'll implement (or at least suggest) it!