4,159 questions
-4
votes
0
answers
38
views
Factory phone set up icon 3 without wifi or cellular data [closed]
Is it possible setup phone with out wifi or cellular data after factory reset. if so i would be extremely grateful thank you for your time and hope every one has a blessed Thanksgiving
0
votes
0
answers
46
views
Getting an 'Not a tty' error when running python .exe that generates a QR Code in Git Bash
Failing in GitBash when trying to use python to generate a QR Code. Fails on the print line. Works find on windows device.
Error Message:
Traceback (most recent call last):
File "awsauth.py&...
- 11
2
votes
0
answers
61
views
Random Barcode Detections on Timeout When No QR Code Is Present (mobile_scanner)
I’m getting random barcode values when the scanner view closes due to timeout even though no QR code or barcode in front of the camera.
Each time this happens, the detected values are different.
Code :...
- 1,003
0
votes
0
answers
87
views
Crop Inner Black Square in QR Find Pattern
I'm doing an image processing inside the QR code finder patter. The problem is I can't perfectly crop the inner black square inside finder pattern. It's always have some white space around the black ...
- 159
1
vote
1
answer
95
views
Blank screen after QR code scan and returning result using Navigator.pop
I'm building a Flutter app using the qr_code_scanner_plus package. The QR scan works, and I’m able to retrieve the scanned result, but after scanning, the app navigates back and shows a blank screen (...
- 754
11
votes
1
answer
436
views
Does this code indicate a mistake in Wikipedia's example on the "QR Code" page?
I am doing some work with QR codes, and to test my code, I was comparing it against the example QR code at the top of the Wikipedia page for QR codes:
While working on my code to attempt to re-...
- 323
0
votes
0
answers
55
views
Requesting TikTok official API to obtain login QR code interface returned an error: "invalid_scope"
My website wants to display TikTok's QR code and support TikTok app login by scanning the code. But accessing TikTok's web login suite (which is the practice of most websites) requires users to click ...
0
votes
0
answers
82
views
How to get information from a QR Code with Unreal Engine Android
I have very little experience with c++ or java and I want to make an Android app with Unreal Engine 5.3, which can either scan or be opened by scanning a QR Code and do something with the Information ...
- 41
0
votes
0
answers
78
views
How to fix Checksum Error while doing an Android app's QR Provisioning on a Factory Reset Android?
More details:
Phone - Vivo Redmi Note 8 Pro
Android version - 12
File: app-release.apk
Method: QR Provisioning
API chosen in Android studio: API 24
Error: ...checksum error. Please contact your IT ...
- 139
-2
votes
2
answers
61
views
Minimal Version 10 QR Code Generator in C# for Legacy .NET [closed]
I need a minimal C# class that can generate Version 10-L QR codes (97×97 modules) from a short text payload (≤174 bytes), and render it into a Bitmap. This must work in older .NET environments via Add-...
- 810
0
votes
0
answers
25
views
Error 394 when generating XML in Node.js with xmlbuilder2
I am encountering error 394 when trying to submit the NFC-e to SEFAZ. The error message indicates that the invoice is being rejected due to "missing QR-Code information." However, when ...
0
votes
0
answers
176
views
Is there any ways to activate eSIM from android app with LPA adress and code?
I'm trying to start eSIM installation flow with my lpa address and code
val lpaAddress = eSimData?.lpaAddress
val code =eSimData?.code
val intent = Intent(EuiccManager.ACTION_START_EUICC_ACTIVATION)
...
1
vote
0
answers
46
views
How to install Blazor PWA by scan QR code
In PWA Blazor application the user can download the application by pressing the download icon that shows in the end of URL address bar
What I'm trying to do is to generate a QR code the allow the ...
- 5,183
0
votes
0
answers
152
views
QR Codes from WalletPasses App Not Recognized by Scanners (PKPass)
Hello and welcome everyone! We're currently using scanning devices at a fair to validate tickets.The tickets are distributed as .pkpass files and imported into various wallet apps such as Apple Wallet,...
- 183
0
votes
0
answers
35
views
Method for attributing App Store Purchases?
How can I attribute App Store installs to Points of Purchase?
For example, I will have a map app that a visitor center may display a poster with a QR Code for patrons to purchase the app. I need to be ...
- 6,696
0
votes
0
answers
77
views
How to connect the webcam in Unity scene (Sentis YOLO integration)
I’m working on a Unity project that uses the new Unity Sentis package to run YOLO object detection on either a video/image file, or webcam input. I’ve got it working perfectly with a video using the ...
0
votes
2
answers
139
views
Unity QR scanning app for Hololens 2 doen't detect QR code
im working on a project and i need to make an app for hololens 2 that can scan the QR codes directly, im not familliar with this AR development thing so i tried to use the example from microsoft (...
- 11
0
votes
0
answers
170
views
What is the correct way to encode vCard data for QR codes (with line breaks in notes field)?
I'm trying to generate a QR code that contains contact information in vCard format with a multi-line note field. The QR code can be scanned by android and apple devices and the user can create a ...
- 344
0
votes
0
answers
77
views
How to generate raast payment dynamic qr code?
I am developing a billing system where I need to generate a Raast payment QR code that includes a dynamic price and bill ID. The goal is for users to scan the QR code, pay the specified amount, and ...
1
vote
1
answer
91
views
Why can I not encode ScalaPB `toProtoString` into a QR code and decode it again?
Background:
I have a protobuf object called RegistrationInfo, defined as such:
message RegistrationInfo {
string serverID = 1;
string serverIP = 2;
string alias = 3;
string rootCA = 4;
}
In ...
- 923
0
votes
1
answer
371
views
ZXing QR-code scanner to automatically choose the camera based on distance from objective
HTML:
<zxing-scanner
[device]="selectedDevice"
(scanSuccess)="onQrCodeScanComplete($event)"
style="width: 100%; max-height: 50vh;">
</zxing-scanner&...
0
votes
0
answers
81
views
QR scanner on angular project not choosing the right camera
I've got this QR scanner on my component and it works, but has a problem: in some devices (mostly devices with 3 or more cameras like iPhone Pro) it doesn't get the camera for short distances (the one ...
0
votes
2
answers
88
views
PowerApps/Flows Inconsistencies with Scanning QR Codes
At my company, I've setup an inventory tracking app. All the items in inventory have an associated QR code that just translates to the item's plain-English name, or the "Title" of the item. ...
0
votes
1
answer
369
views
Decoding QrCodes with Camera in Maui Blazor Hybrid
I need help with my .NET Maui Blazor Hybrid project. What I am trying to do is the following:
Each user page has a generated QR code that holds a part of the endpoint address
There are 2 types of ...
1
vote
0
answers
69
views
detect when android device is connected to a qr scanner device
I'm developing a feature on Tablet to detect whenever user connect to a QR scanner device - for example: BC-NL3000UⅡ. So far, I'm using broadcast receiver to detect whenever USB_STATE changes which ...
5
votes
2
answers
101
views
How do I decode a bit string representing a n-digit number, where the 'n' digits were grouped and encoded in bit words of different lengths?
Background
I am trying to decode a bitstring from a QR-Code, where the data was encoded in numeric mode. According to this QR-Code tutorial: https://www.thonky.com/qr-code-tutorial/numeric-mode-...
0
votes
0
answers
165
views
How to detect a data matrix/qr code like pattern without the locator information?
I would like to detect the pattern in a 2D image, which is similar to a data matrix or a qr code, but without the locator/timing information.
Here is an example image (which is a part of a data matrix)...
- 191
0
votes
1
answer
548
views
Expo Camera Shows Black Screen in Development Build and APK While Scanning QR Codes
import { CameraView, CameraType, useCameraPermissions } from "expo-camera";
import { useState } from "react";
import { Button, StyleSheet, Text, TouchableOpacity, View } from "...
-1
votes
1
answer
139
views
Camera Scan Qr in flutter windows webview
I'm trying to implementing a scan qr feature on flutter windows.
Since camera_windows does not provide stream image so i switched to another solution is using webview but i don't know where to start, ...
- 29
0
votes
0
answers
71
views
Camera upside down with flutter_zxing package
I have a problem with flutter_zxing package in order to scan barcode. It is oriented upside down. Here is my code:
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:...
- 11
0
votes
2
answers
61
views
having issue about qr code scanner that can scan almost everything
so im building a QR code scanner in Flutter that can only scan specific type of qr codes How can I add a feature that will reject QR codes that have nothing to do with the object I'm trying to scan?
...
- 17
0
votes
1
answer
555
views
mPDF QR Code not displaying in PDF using mpdf/qrcode library
I am using mPDF along with the mpdf/qrcode library to generate QR codes and embed them in PDF documents. These PDFs are generated from data extracted from XLS files using PHPSpreadsheet. The entire ...
- 168
1
vote
0
answers
112
views
Flutter MobileScanner - camera zoomed on ios issue
I am using flutter package = MobileScanner to scan qr code
In the UI there is a button that triggers camera open based on state condition
then on opening the qr scanner a small camera popup screen ...
- 79
0
votes
0
answers
66
views
How to generate QR code and inject it to document before printing it in python
I want to make up a script in any language to catch the print job of a document and print a dynamically generated QR Code on it before the print job is processed. Is there any solutions ?
I already ...
2
votes
0
answers
195
views
Is there a way to use Google ML Kit to scan multiple QR codes simultaneously?
I’m working on an Android application where I need to scan multiple QR codes at once (e.g., up to 10 QR codes in a single frame detect and decode at the same time). I’m considering using Google ML Kit'...
0
votes
0
answers
34
views
Is it possible to load wi-fi settings from the browser on mobile?
Not sure if this is the right question to ask, but the behavior I'm trying to get is making a QR code that has my Wi-Fi password so people can get on the Wi-Fi just by scanning, but also allow the Wi-...
- 842
1
vote
0
answers
72
views
ZPL: ^FN1 not show all content when used in ^BQ command
I am trying to generate a QR code that contains RFID data.
But, in the code data the first 3 characters are missing. I know this issue when using the ^FD command. Here, you need to format the data by ...
- 11
0
votes
0
answers
289
views
The ngx-scanner is not working in devices
I'm trying to use ngx-scanner (https://github.com/zxing-js/ngx-scanner) but after following the instructions it does not work. In PC is working but in other devices no (phone, tablet...). I have ...
- 405
1
vote
0
answers
55
views
Why am I getting 'Failed to decode QR code: An error occurred while processing some image(s)' in PHP with ImageMagick?
I am working on a PHP application that involves decoding QR codes using ImageMagick. However, I encountered the following error in my logs:
{"logtime":"2024-12-04 14:19:45.955",&...
1
vote
1
answer
71
views
why qr not read quickly until i make zoom to qr to read?
I make code to read qr code but I face issue it read qr code with difficult way
I must make qr big zoom for qr and more close from qr to read it success
so how to handle that
what features I must add ...
0
votes
1
answer
183
views
how cpp-ZXing generate QR Code with Wide Characters?
#include "ReadBarcode.h"
#include <iostream>
#include <array>
#include <string>
#include "BitMatrix.h"
#include "BitMatrixIO.h"
#include "...
- 85
0
votes
0
answers
134
views
Why does my ESC/POS printer stop responding after attempting to print a QR code?
I am using the following function to send ESC/POS commands to my printer. The function works perfectly for printing styled text, but when I try to print a QR code, the printer does not respond.
After ...
1
vote
0
answers
71
views
Can't go to next line without Ending text in QR code using barcode Printer API
I am generating a QR code in a C++ project and trying to include multiline text. However, whenever I add a line break using \n or \x0A, the QR code generator stops rendering text after the first line ...
- 13
1
vote
0
answers
45
views
Using QRcode, in some unknown cases, QRcode doesn't generate a fit qr image
I am trying to generate QRcode with "qrcode".
I am able to do it, but in some unknown cases, it generates code that cannot be shown and present like it cannot be loaded.
For example, when I ...
- 33
1
vote
1
answer
193
views
Applying a transformation on an image based on a QR code
I would like to correct the perspective and scale of an image. The image contains a QR code (of known size EXPECTED_QR_SIZE), and I am using OpenCV functions to detect the QR code and apply ...
- 93
1
vote
0
answers
58
views
How can I improve my MATLAB code to isolate a QR code from images with various elements in their backgrounds?
I'm currently working on a project that involves isolating QR codes from images that contain various background elements. But I'm struggling to figure out how to isolate the QR code from the ...
- 111
1
vote
0
answers
117
views
is there a way to remove only QR codes from each page of a PDF using iText7
I am trying to remove QR code from each page using iText7 but it is distorting every other text values and components of the page, is there a way to do it in a proper way. Below is the code I am using:...
- 11
-1
votes
1
answer
121
views
AttributeError: type object 'Image' has no attribute 'open' - I am stuck and in need of assistance please
I am learning from a tutorial online about how to generate QR Codes. I have started to create the frontend which is the application window with an input field and text label. I am now onto the backend ...
0
votes
0
answers
15
views
Uncaught TypeError: Cannot read null property (reading 'value') [duplicate]
I have JavaScript codes that give this error:
Uncaught TypeError: Cannot read null property (reading 'value')
Here are my codes
1.
let imgBox = document.getElementById("imgBox");
let ...
1
vote
0
answers
51
views
"segno.QRCode has no attribute to_artistic" error
I have a weird issue where "qrcode-artistic" works when executing the python code as it is (as code by using 'python mycode.py'), BUT it does not work if I compile the code using pyinstaller....
- 13