World's Largest QR Code Created at Hackerspace Charlotte - HotHardware
World's Largest QR Code Created at Hackerspace Charlotte

World's Largest QR Code Created at Hackerspace Charlotte

Since their rise to fame a couple of years ago, we've seen QR codes used in a variety of different ways. One of the most popular uses has been to quickly link someone to a website, either from within a website itself, or via a magazine or newspaper. Some download sites have even begun implementing them to allow people to download a file to their mobile fast, rather than have to manually type out a long, complicated URL.

One of the most creative uses I've personally seen has been with a coffee shop up here in the Great White North, for those looking for work. Instead of making these folks stand in line and disturb a manager who is probably very busy, a QR code on the door links people directly to an online job application.

Until now, that was the coolest QR example I could think of, but after seeing what Hackerspace Charlotte has come up with, it's been superseded. The folks here, along with those at a metal recycling facility called Southern Resources, hopped on top of the business with paint-cans and brushes in-hand, and got to work.

The result is a permanent 100' x 100' (10,000 square feet) QR code that can be seen via Google's satellite. Unfortunately, due to the angle, none of my devices have been able to read the code properly (Edit: As DanielWalkswithstick points out in the comments, unchecking the 45 degree angle option in Google Maps fixes this problem), but it links back to "http://qr.hsclt.org/" - aka, the site that discusses the accomplishment.

Interestingly, it only took a mere 3 weeks from the time the QR code was finished for it to show up in Google's satellite imagery. Given how "easy" this would be to pull off on a flat roof, I can't help but wonder if we'll begin to see more people trying their hand at it as well.

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On Google Maps, Uncheck (45 degrees)

https://maps.google.com/maps?q=Southern+Resources&hl=en&ll=35.252718,-80.797694&spn=0.000747,0.000645&sll=35.252716,-80.797708&sspn=0.000747,0.000645&t=h&radius=0.02&hq=Southern+Resources&z=21

Go to that, upper right corner, mouse-over "Maps" and uncheck 45 degrees.

This results in the image rotated in the plane of the screen, about 15 degrees. Should be readable.

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Thanks a lot for pointing that out, I couldn't find an option like that when I was just messing about. Oriented properly, my phone still couldn't pick it up, but my tablet could.

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One of the cool things about QR codes is how much error you can introduce and still get a good scan. I'd recommend a scanner such as ZXing if you're having troubles.

There was a company we came across that offered to produce codes on top of buildings to use as advertisement, but last time I checked they hadn't created any...

Ryan Stachurski,

Hackerspace Charlotte

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Now google maps is going to be a place to place ads.  Ads on ads on ads.

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Thanks for taking the time to comment, Ryan. I actually have been using ZXing for years - I think it's just my phone that's pretty stubborn.

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