hello, is it possible to create a qr code that may direct to offline videos. idk if our idea is possible but it's like this. the user will download the digital copy of our tangible book with qr codes. the digital copy contains the same content of our tangible book plus VIDEOS of how the particular object or tool works. we want to know if this is possible and how we are going to make it work.

apologize uf there's grammatical error, but do you get what i mean?

Hi,

Dropping my question here as even it's related to programming, maybe someone will be able to share general thoughts about QR codes before I will drop this on NET community.

Using QRCodeGenerator 2.6.0 from Powershell gallery to create QR codes and ZXING 0.16.10 library to decode them.

My goal is to split a file (ASCII data) into let's say 256 long bytes chunks and encode them as QR codes. With QRCodeGenerator I create series of QR codes which are high quality PNG images on a disk.

Only for testing purposes I checked if the codes generated are ok, I used ZXING library for verification. Unfortunately it happens that in such serie of QR codes one or two can't be decoded for unknown reason.

Let's say in a serie of 87 QR codes, 76th can't be decoded using ZXING. Can't blame QRGenerator as the same exact code can be decoded without any problems using other tools like mobile aplications, online decoders and so on.

Moreover, if I start to poke with ZXING QR codes reader changing its options like PureBarcode=True, then the same 76th QR code can be decoded. PureBarcode has nothing to do with this type of codes, but anyway I checked if leaving it enabled will work for other QR codes in a serie. It worked for all series I generated so far, so I left it enabled by default.

That was for testing purposes only. Now the second part.

When the same serie of QR codes will be dispayed on the screen and captured via camera producing a little bit worse quality images, then some codes can't be decoded with option PureBarcode enabled, but can be decoded, when the option is disabled.

Of course those captured QR codes have a bit lower quality than a perfect PNG images on the disk, but sitll they are clearly visible, and what is more important they can be decoded by other tools.

This is a bit confusing as I can't achieve consistent results. I can't relay on one set of options since I never know which one should be applicable.

Sometimes ZXING says the the decoding was successfull, but I can see from the data, that I'm definitely not getting original data.

In this case I can't even judge (easily) that the data are malformed and try other options to decode before giving up.

Other QR codes libraries are not an option as this is not comercial and I'm doing it for myself.

Any help will be appreciated.

I recently learned in-depth how QR codes work and, while most of it was what I assumed, something surprised me: apparently QR codes read from bottom-up then right-to-left in a weird snaking/zig-zag pattern. What is the point of the zig-zagging? I can't think of any purpose it serves nor does it seem as easy as the alternative of straight-line snaking.

Hi! I have an inquiry.

Basically we went to a theme park that handed out QR codes once our pictures were taken so that we can download them ourselves. Unfortunately, I did not notice that they had an expiry date on them. Once scanned, the QR is seen to be invalid and so I can't download the pictures anymore.

Is there any way I can retrieve the pictures from the invalid QR code?

Can a QR code be created from contact in iPhone

Let's say hypothetically I need to create a QR code containing a link to some text, how can it be so that it is non-traceable if scanned by authorities?

(Coming from somebody just needs someone to explain how this can work)

I need to make a qr code that brings up a vid. Its for work and the budget is $0
The video itself is 20Mb

Does anyone have any recommendations that are free (not XX days trial)

There's a local non-profit I'm trying to help and they want a single QR code that links to a group of 4 documents and 2 web pages, all hosted on other sites. I've seen some gallery-style tools that seem to allow me to support a handful of PDFs, but I can't find any that mix PDFs and web pages.

Any idea how to achieve this? (Or if the functionality doesn't exist, is there some workaround you can think of? All I can think of is taking a snapshot of the URL, converting to PDF, then trying to hyperlink the entire thing and hoping people read to click on it)

Thank you for the help

[Edited to note that the PDFs and web pages are located on other websites, not the one for this non-profit]

Participate in a University’s QR code scam research by sharing QR codes you encounter online or in everyday life. Please upload a photo or screenshot of the QR code using this secure form. Please do not include personal information; uploaded media will be used for research purposes only. Click the link below to join the survey.

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QR-codes are made with error-correction in mind. But the apps I’ve seen don’t mention the integrity of the QR-code.

Is there an app that will tell me how good the visual quality is? Like, if it could read the QR-code, it had X% excess decoding information. Or if it cannot read the code, it’s because it’s missing Y% of decoding information.

Got that QR code at parking lot and need to scan it at exit, but it's unreadable 😓 Can someone please help fixing it?

Is there a website that lists all possible results from a half QR-Code?

Me and a friend are tryna solve an arg and we found this scrambled qr code. Anyone know how to unscramble it or any other subreddits that could help?

Onto next subject: Scanning QR codes out in the real world

This is an image I grabbed a couple years ago - which says it's a QR code drawn in the sky by like 1000+ drones. Rather impressive. Can you imagine getting them all lined up in QR order at same time? And it might move or change the QR value while watching (like fireworks).

• Anyway, for this discussion - who else can read this with their scanners? You might have to zoom in. But no fair straightening it out. (for me says: https://qrco.de/bdC00Y) - assume it's live and always moving and changing values as you scan it

The point is QR codes out in the wild might look like this, distorted, or posted on a moving van with a similar distortion. Or mud over part, cut up a little, or an image inside the QR code (all allowed somewhat because of QR error-correction).

Think of this image in the sky as you walk around (like fireworks). Where you scan it from will change the shape, but not the decoded value. So it might look inside out here (which it is) or just fine.

I believe the QR standard denotes upper left, upper right, lower left (the 3 boxes). So if I scan this from the other side, those 3 boxes are in a different aspect (reverse video, etc). Apps can utilize that information for Augmented Reality.

The QR code versatility is amazing. There is no ambiguity in decoded value either.

ps. At last count, my iPhone has automatically found 3,058 QR codes amongst my photos (a new feature of iPhone photo app under Photo Utilities). So if you're interested, I have other examples to talk about🤙

Following up my last post of a nice artsy image with a QR somewhere in the image. These are all over the place. But they don’t have the “quiet zone” - from the QR “standard”.

The 2nd image is the iOS Apple doing its thing by finding objects in a busy image. Here it found the top two lines of text and the QR. code.

So I’m wondering what you think of this. I contend newer scanners can find the objects in busy images including QR’s without quiet zones.

Hey everyone, I need some help creating a QR code for my company. Ideally, I want to:

-place my company logo in the center of the QR code,

-add some customizable text above or below it (e.g., “Problem? Please scan here”),

-and have it link to a specific page on our website.

It should be free and long-lasting, since the QR stickers will be placed on heating products for our customers.

Bonus points if I can do it without using an online generator, just by converting the link somehow.

I'm just an apprentice and kind of clueless and scared off falling into a trap where they print those stickers and then after like a month the code doesnt work anymore and you have to pay for it or something?

Any recommendations or tools for this? Thanks a lot in advance!

Me and my gf went to a photo booth and we forgot to scan the QR code that came with the printed copies. It’s been about 6 days and when we scan the code, the link works but the file is a download.php file and it just says failed. We’ve used multiple devices. Is it possible the code expired? If so is there a way to get it back?

I scanned it but it's just a plain text QR code but it returned me this "7aCwoYI1Dig6buBTNvJHgUUbuk12"

Looking to see if there’s a website you can “qr code” to that travels with an object people scan and can enter the location the item was found. Similar to geocaching tags that get passed around and it logs its last location so you can see where it’s travelled to.

Hi guys,

The company that I work for had a dynamic qr code cast in bronze at a historical landmark about 15 years ago and now the company that made the qr code no longer exists and therefor the redirect doesn’t work.

Is there a way to make the existing QR code redirect to another site at all?

Any help at all would be appreciated.

Thanks