How do QR codes work? The checkerboard patterns taking over the world, demystified. Go to https://Saily.com/veritasium and use the code ‘veritasium’ to get a...
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
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.
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
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.
#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.
I’ve always found them to be kinda cool, but, like… I can type in a url faster than getting out a camera and getting it to scan most of the time. Especially when they’re using a shortener to have a URL that’s literally just 4 characters long. So I pretty much never actually do anything with QR codes.
They can be used for more than just a website, but I’ve never seen one that does anything but act as a link. Can’t you fit, like, a small image in one? Rickroll someone with just Astley’s face instead of going to the YouTube link?
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My fav application is scanning with a phone to immediately get on wifi
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.
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
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.
Smart! If my company ever digitises enough to make this a possibility, I’ll implement (or at least suggest) it!
Who has time to hate things like QR codes?
Redditors maybe?
Scammers love them too
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.
I’ve always found them to be kinda cool, but, like… I can type in a url faster than getting out a camera and getting it to scan most of the time. Especially when they’re using a shortener to have a URL that’s literally just 4 characters long. So I pretty much never actually do anything with QR codes.
They can be used for more than just a website, but I’ve never seen one that does anything but act as a link. Can’t you fit, like, a small image in one? Rickroll someone with just Astley’s face instead of going to the YouTube link?