📖 Simple Exam Login and Tab Tracker

📦 Features

• Tab/Application Change Detection
  Detects when the user switches tabs or applications and logs it to log.txt. Logs off the user on the second attempt.

• Client-Side Timer
  Lightweight, browser-based timer (no server-side implementation to save bandwidth).

• Login Logging
  Records each successful login along with the timestamp in logged.txt.

• Single Login Mode
  If enabled, prevents a user from logging in again until logged.txt is cleared.

• Google Forms Integration
  Customizable Google Form embedded via an iframe in actual.html.

• Input Sanitization
  User-entered names are processed — capitalization is standardized and whitespaces removed.

• Full Login Logs
  All login attempts and activity are neatly stored in logged.txt and log.txt.

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📖 Instructions

1. Add User Names
   Add the list of allowed usernames inside names.json.

   • No spaces between names.
   • Write names in a block or array format.

2. Set Up Google Form
   Replace the iframe link inside actual.html with your own Google Form link.

3. Enable/Disable Single Login Mode

   • To enable Single Login: set the first line of logged.txt to TRUE.
   • To disable: set the first line to FALSE.

4. Change the Timer
   Modify the timer duration by editing line 19 in /src/script.js.

   Example:

   • 20 for 20 minutes
   • 15.5 for 15 minutes 30 seconds

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📁 Files Overview

File/Folder	Purpose
names.json	List of allowed usernames.
logged.txt	Tracks login timestamps and names. Controls Single Login Mode.
log.txt	Logs tab/application change events with timestamps.
src/	Contains client-side files like index.html, actual.html, and script.js.
server.js	Express backend handling logins and activity monitoring.

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📸 Demo Screenshots

🔐 Login Page

When user not in names.json/already logged in once in Single Login Mode

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📄 Actual Exam Page with Timer and Google Form

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⚠️ Tab Change Detected Alert

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📜 Log Files Example

logged.txt

log.txt

names.json

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✅ Notes

• Single Login Mode blocks users from re-logging in until logged.txt is cleared.
• All login and tab switch events are timestamped for easy tracking.
• Make sure to customize your Google Form link before deploying.

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🚀 Quick Start

npm install
node app.js