QR code is an ISO-standardized two-dimensional barcode format.
Here is a sample QR-Code, pointing to Tag wiki qr-code
A Qr-code decoder has many specific patterns to recognize how to read the QR-code
Eyes
Alignment
Timing
Questions tagged [qr-code]
4148 questions
45
votes
7 answers
How to make QR code for BOTH Android Market and App Store
I have an app that exists in Android and iPhone stores. So I have two URLs for them (Market and AppStore), but I do not want to add two different QR codes to the homepage. Is there a way (online service I'd expect) to have a single URL that will…
JaakL
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5 answers
How can you read QR Codes in PHP?
Is there a plain PHP implementation for decoding QR codes?
I have a faux-smartphone. One of those phones that parades as a smartphone but that I can't download any apps for, and I want to create an email service to where I can take a picture of a…
Navarr
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43
votes
9 answers
QR code (2D barcode) coding and decoding algorithms?
Looking for free/opensource code or description of algorithms to code (simple) and decode (hard) the 2D barcode QR code.
It doesn't seem like a trivial problem, but it's so popular in Japan that there must be something already available...
Adam Davis
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42
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8 answers
Is there a way to generate QR code image on iOS
Is there a standard way to generate a QR code and attach it to a mail item from iOS client app (no server code)?
user1561181
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6 answers
What is the spec for formatting data in QR codes? I can not find it anywhere
I'm specifically asking if, and what, is the specification for formatting the text inside a QR code - not how to generate a code (which I can do).
I need to put hCard data into a QR code, however I don't know how to mark the QR code as VCF data…
Jonathan Vanasco
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41
votes
6 answers
Android QRCode Scanner Library
What do we have out there available to us (if anything) that we can call for QR data discovery and extraction on an image?
While there have been plenty of posts thus far referencing the ZXing library for QRCode scanning, I haven't found that to be a…
Jay Snayder
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39
votes
3 answers
Aztec barcode vs QR-Code
I am trying to develop an application that will use tickets given the user the ability to validate them. I am wondering why I should choose Aztec barcode as many many companies have already chosen that instead of QR-Codes. What are the pros of the…
arniotaki
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38
votes
6 answers
QR Code encoding and decoding using zxing
Okay, so I'm going to take the off chance that someone here has used zxing before. I'm developing a Java application, and one of the things it needs to do is encode a byte array of data into a QR Code and then decode it at a later time.
Here's an…
LandonSchropp
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35
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9 answers
How do I use the metadataOutputRectOfInterestForRect method and rectOfInterest property to scan a specific area? (QR Code)
I am building a QR code scanner with Swift and everything works in that regard. The issue I have is that I am trying to make only a small area of the entire visible AVCaptureVideoPreviewLayer be able to scan QR codes. I have found out that in…
The_Dude
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35
votes
4 answers
Reading barcodes with android
Hi I am developing an application for the android htc hero. I am looking into ways of using the inbuilt camer to read 2D barcodes and extract the string returned from the barcode. I have only recently begun working with the android sdk but I do have…
user233354
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33
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4 answers
Encode algorithm QR-code
Who knows how to generate qr-code?
And how to decorate like here http://mojiq.kazina.com/?
Yanker
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32
votes
5 answers
Android Using ZXing Generate QR Code
I was having some problem when trying to generate QR code in Android Programming. Here is the Tutorial I followed. When my generate button on click, I am calling this method:
private void generateQR(){
String qrInputText = "test";
//Find…
user2531590
32
votes
3 answers
QR Code possible data types or standards
I am developing an iOS Application for scanning QR Codes. I am successfully able to scan and get code from QR code.
Question:
My question is what are possible data types and format I can expect from QR Codes?
During my search on google I found QR…
Irfan DANISH
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31
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7 answers
QR Code generation in ASP.NET MVC
Is there a .NET API that generates QR Codes such as this one?
I'd like to display these on pages that I expect my users to print out.
Drew Noakes
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votes
3 answers
How to draw a QR code with Qt in native C/C++
QR in Qt
As a companion question to How to scan for QR codes with Qt, I want to know how to draw a QR code from native C/C++ code in my Qt5 based desktop app, but I could not find an example of how to do this.
I know QtQR exists, but it has…
Mr. Developerdude
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