• I want to thank all the members that have upgraded your accounts. I truly appreciate your support of the site monetarily. Supporting the site keeps this site up and running as a lot of work daily goes on behind the scenes. Click to Support Signs101 ...

QR code - weed this?

JBurton

JBurton

Signtologist
Bobby H said:
Barcodes are different from QR Codes regarding bits of data that can go missing. Lose one stripe of a bar code and it will be invalid. QR Codes can be generated with certain amounts of error correction built in; they can still work when missing some data spots or when a logo is covering up the middle of the code.
Click to expand...
I didn't know this, but had to test it. You can indeed lose a significant amount of small squares and still read the code.
1777558659946.png
 
  • Informative
Reactions: 1 users
Stacey K

Stacey K

I like making signs
JBurton said:
I didn't know this, but had to test it. You can indeed lose a significant amount of small squares and still read the code.
Click to expand...
That's what I would be most worried about...losing some of the squares either from weeding or from weather, etc. Good to know!
 
JBurton

JBurton

Signtologist
damonCA21 said:
I would worry that if you lost enough of them it would send people to someone elses website :D
Click to expand...
Oddly enough, removing one of the larger squares in the corner made it unreadable, not inaccurate... I guess qr codes have a good parity setup... Well now after reading the wiki article, I'm even more impressed. Also, this poor chap is featured in it (yes, that's two ladders strapped together... at least 2):
How_QR_codes_are_created.jpg
 
You must log in or register to reply here.
Top