I want to create qr-code with output base64 string from javascript. I found http://davidshimjs.github.io/qrcodejs/ for generate qr-code. That I want is get base64 string from this awesome tools.

I'm printing some QR codes (from a Ruby script) writing ESC/POS commands to a Epson TM-T20 thermal printer. BTW, I'm writing a simple ESC/POS commands printer "driver". The printer I'm using an E...

I'm currently developing an app that uses QR code to identify products. Here are the use cases: If user hasn't installed the app, scanning the QR code should take them to AppStore / PlayStore to ...

Using visual Studio ultimate 2012. Im currently building a report to be printed in report viewer. so far i have a bunch of text boxes that Gets its values from my form text boxes via parameters. ...

I've accidentally made (and distributed) a QR code to a URL (important: not a VCARD data set like below). So now I need to redirect visits from the URL "directly" to the VCARD data: BEGIN...

I used Zbar and OpenCV to read the QR code in the image below but both failed to detect it. For ZBar, I use pyzbar library as the python wrapper. There are images that QR is detected correctly and ...

Is it possible to read a binary encoded QR Code with AVFoundation? I can get a AVMetadataMachineReadableCodeObject object of .type AVMetadataObjectTypeQRCode, however this only has a stringValue pr...

I would like to create a QR code with using ZXing(0.16.4) But I meet following exception, System.InvalidOperationException: 'You have to set a renderer instance.' Almost the same code works w...

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 ...

I'd like to achieve WhatsApp web like authentication where the user should scan a Qr code using the mobile app to login to the web app using Firebase and I want to achieve this with users who are r...

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 generate...

I'm trying to store binary data in a QR code. Apparently QR codes do support storing raw binary data (or ISO-8859-1 / Latin1). Here is what I want to encode (hex): d1 50 01 00 00 00 f6 5f 05 2d 8f...

I need to know how to calculate the positions of the QR Code alignment patterns as defined in the table of ISO/IEC 18004:2000 Annex E. I don't understand how it's calculated. If you take the Versi...

I am using the barcode scanner from react-native-camera and currently if I use it and there are multiple QR-codes closely on top of each other, I point my camera at one and it reads the code above ...

hi just trying to create a qr code in my rails website using sam vincents qr code generator https://github.com/samvincent/rqrcode-rails3....... first i added this code to a controller class Qrco...

I am trying to extract the complete Aadhar number (12 digits) from the image of an Aadhar card (India) I am able to identify the region with QR code. To extract the info - I have been looking into...

I have a device running Android 7.1.1 and I am building sample DPC app in preparation for making a COSU kiosk app but I keep running into an error in the provisioning setup. Steps I take: Factor...

I am successfully drawing and displaying the QrCode on a QLabel, but it's not recognised when I scan it. Here is the code I used - I made a small class with a static function: void QrCodeDrawer::p...

Was looking for a way to access the camera/webcam from blazor (client webassembly) to create a QRcode reader. Any suggestions? I've googled and looked in github for a qrcode scanner for blazor but ...

I run a simple demo to use cordova-plugin-qrscanner, it can scan qrcode but no camera preview. qrscannerDemo on Github Related code blow: import { Component } from '@angular/core'; import {...

I'm a beginner in python and currently studying QR code detection and decoding. I'm having a hard time rotating the detected QR code to the right position. I already used minAreaRect() to rotate my...

I am having trouble detecting QR code using Pyzbar. Under perfection condition, I am able to detect the QR code using the original png image. However, when I do video capture from a camera, and the...

I wanted to test react native app on expo go. I have downloaded expo go app, run expo start in VSC, and once scanned QR code using expo go I get such log. Looks like there is issue with network con...

i would like to create a QR-Code containing a very simple website. The problem is, i would like to store the page inside the QR-Code, not as a url pointing to a website. So the qr-code contains the...

Wechat has a very convenient QR-code login option (sorry, Chinese only) for desktop websites. Basically you just scan the code with Wechat, click OK, and you're logged in. However, I'm struggling ...