Technology

58591 readers

3870 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

165

How QR codes work (youtu.be)

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

7 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] catloaf@lemm.ee 3 points 1 week ago (1 children)

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 week 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.