An example of using Qt to develop an ID card reader on a Linux system, followed by the C++ demo source code: Compilation platform: Kirin V10 (SP1), amd architecture, Intel i7-10700 CPU Qt version: Qt Creator 4.11.0, Based on Qt 5.12.12 (GCC 9.3.0, 64bit) donseeTest: project source code build-donseeTest-unknown-Release:Release build-donseeTest-unknown-Debug: Debug Double-click donseeTest in the […]
Tag: reader
The javascript front-end xhr uses the FormData() and FileReader() functions to upload images, and the back-end php receives and processes the FormData() uploaded data. Only 1 data can be received and methods to prevent upload vulnerabilities.
//The front-end check type is simple check, because penetration will stop the front-end javascript code, so detection and replacement on the back-end is the focus. <!DOCTYPE html> <html xmlns=”http://www.w3.org/1999/xhtml” lang=”UTF-8″></html> <html> <head> <meta http-equiv=”Content-Type” content=”text/html;charset=UTF-8;”/> <title>For testing uploaded files</title> <script type=”text/javascript” src=”common.js”></script> <style type=”text/css”> .button {<!– –> margin-right: 20px; } #preview {<!– –> display: flex; […]
PDF file text copy permission is encrypted, but all text in the PDF is required. Solution: Python + FineReaderOCR
This time I really found a powerful OCR to help me solve the problem 1. The usual situation If you need to extract text from PDF, the first software that comes to mind is Format Factory. Just use its “PDF→Text” function. The advantage is that the software runs quickly and the processing time is short. […]
New version of foreigner permanent residence permit ID card reader C++ development SDK interface
Recently, the National Immigration Administration has upgraded and facilitated the application of foreign permanent residence identity cards (hereinafter referred to as permanent residence certificates). The new version of the permanent residence certificate will be officially issued on December 1, 2023. The new version of the permanent residence permit has adjusted the numbering rules and improved […]
New version of foreign permanent residence ID card EST-100 ID card reader interface update
The following is the C# code for reading the new version of foreigner’s permanent residence ID card: //ID card information****************************************** *************************************************** *********** private void button4_Click(object sender, EventArgs e) { if (FormIsOpenReader.IsOpenReader != 1) { richTextBox_idCard_data.Text + = “EST-100 ID card reader connection failed, please open the device first \r\\ “; return; } int t_nRe = […]
[Android] Input event distribution process InputReader(2)
After the analysis of the IMS construction method is completed, let’s take a look at the start method in IMS public void start() {<!– –> Slog.i(TAG, “Starting input manager”); // InputManager->inputDispatcher & amp; & amp;inputReader was initialized before //Start them here and create InputThread threads, namely InputReaderThread and InputDispatcherThread // InputThread is a custom class […]
ScrollViewReader/Positioning scroll view, GeometryReader/Getting view update parameters, MultipleSheets/Multiple working views, Mask/Usage of five-star evaluation view
1. ScrollViewReader positions the scroll view 1.1 Implementation /// Position the scroll view struct ScrollViewReaderBootcamp: View { @State var scrollToIndex: Int = 0 @State var textFiledText: String = “” var body: some View { VStack { TextField(“Enter a # here…”, text: $textFiledText) .padding(.horizontal) .frame(height: 55) .border(Color.gray) .padding(.horizontal) .keyboardType(.numberPad) Button(“Scroll now”) { // add animation if […]
A brief overview of character input stream Reader
Character input stream Reader composition structure This article will give a brief summary of the character input stream Reader in the JAVA I/O stream: In general, each character input stream class has a corresponding purpose, as follows: Character stream base class: Reader Byte stream to character stream: InputStreamReader //Read characters in the byte input stream […]
NFC Reader based on FPAG (6) – PPM generation
This chapter mainly implements the conversion of commands into the encoding method of 1 out of 4 in ISO1569, and realizes the PPM conversion of commands. Here we only briefly introduce the coding rules. 4 takes 1, 2bit encoding, low bit to high bit; b2b1, b4b3, b6b5, b8b7. Based on this encoding method, 8-bit data […]
C# .ashx background obtains the card swiping information submitted by GET, POST, and JSON, and responds to the driver card reader to display text and broadcast voice
This example uses equipment: RFID network WIFI wireless TCP/UDP/HTTP programmable secondary development card reader POE powered voice-Taobao (taobao.com) <%@ WebHandler Language=”C#” Class=”HttpReader” %> using System; using System.Web; using System.IO; using Newtonsoft.Json; public class HttpReader : IHttpHandler { public void ProcessRequest (HttpContext context) { string info = “”; string jihao = “”; string cardtype = “”; […]