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Questions tagged [qr-code]

QR code is an ISO-standardized two-dimensional barcode format.

Here is a sample QR-Code, pointing to Tag wiki qr-code

Simple QR Code

A Qr-code decoder has many specific patterns to recognize how to read the QR-code

Eyes

Eyes Qr code

Alignment

Alignment

Timing

Timing

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Dynamically generating a QR code with PHP

I'm trying to generate QR codes on my website. All they have to do is have a URL in them, which a variable on my site will provide. What would be the easiest way to do this?
AKor
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How to decode a QR-code image in (preferably pure) Python?

TL;DR: I need a way to decode a QR-code from an image file using (preferable pure) Python. I've got a jpg file with a QR-code which I want to decode using Python. I've found a couple libraries which claim to do this: PyQRCode (website here) which…
kramer65
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How to generate a QR Code for an Android application?

I need to create a qrcode in my android application, and I need a library or source code that lets me create a QR Code in an Android app. The library I need must: not leave a watermark (like onbarcode library) not use web service API to create the…
Radu
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How much data / information can we save / store in a QR code?

I would like to use this script https://github.com/jeromeetienne/jquery-qrcode (or is there even a better solution?) What I like to do is "save" some small scripts or programs and even files like xml formatted files (svg, x3d, ...) as QR code…
user753676
82
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4 answers

Free c# QR-Code generator

I'm looking for a free to use c# library/code to create barcodes. Secifically I need to be able to create QR-Code type barcodes. I'm looking for free to use (Open Source or just Free, etc.) not pay to use.
Justin808
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Android, How to read QR code in my application?

In my application I need to read Qr code. I searched the net and found Zing codes however lots of developers had problem with using it and it seems it is buggy! If i assume that my customers has qr reader installed on their device, how can i use…
Hesam
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How to create a QR code reader in a HTML5 website?

I was looking for possibility to create QR code reader in my HTML5 based web page. I've done some googling and all the links point me to the mobile applications. Please help me with some pointers as to how I can use HTML5 and JavaScript to read a…
Binay
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QR code generation library in javascript

I'm currently looking for a js library that can encode text in qr codes. The only one I've been able to find so far seems broken, although other people claim to be using it. The sample page doesn't work. By playing a bit with it I managed to…
Alex Ciminian
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QR CODE max char length

I've read that QRCODES has about 4,290 alphanumeric chars limit (about 4kb). Is it true and is there any way to increase their memory size? I would like to have more space on if possible: P
itsme
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Mechanism behind QR code scanning of WhatsApp web/desktop app

I could not find any answers related to the working mechanism of QR code scanning used on WhatsApp Web. How does the authentication happen when the phone (any smartphone running WhatsApp) scans the QR code on the browser. I don't want to know about…
user6361120
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4 answers

What open-source QR Code Generator would you recommend?

I'm looking for a library to generate QR codes in .NET I've stumbled across a few paid ones, but very few free ones that look any good. Anyone have experience with a good free open-source library? Thanks
Micah
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How to generate a QR Code for Google Authenticator that correctly shows Issuer displayed above the OTP?

Warning: sharing your TOTP seed with third-parties breaks the very basic assumption of multi-factor authentication that the TOTP seed is secret. So, I'm aware of the documentation on this, found here: Google Authenticator Key URI Format When I…
Mark J. Bobak
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Barcode scanner for mobile phone for Website in form

I have inventory maintenance website up and running. currently the back end users are manually typing the item id on the system and using to search and do their work. I would like to automate the typing to scanning qr codes. We are trying to…
M.A
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Alternative to zxing QR reader library for Java/Android?

Is there any other library other than Zxing that can be used to create a QR code reader EVEN IF IT'S NOT FREE. of-course a free one will be great. but I'm also willing to pay to get a library that's easy in customization and to save time. thank you.
a fair player
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QR code reader for iPhone

I want to create QR code reader based application. Using which library, I can create my application ? Note: I searched in google. Always I am getting zxing. I downloaded the zxing project. But the problem is; I run the application. But it is reading…
jfalexvijay
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