📍 Location-Based Attendance Verification (Streamlit + GPS + Microsoft Forms)

This project provides a location-restricted attendance system built with Streamlit.

Users must be physically present near the seminar/classroom to access the attendance form. If they are inside the allowed GPS radius, they are automatically redirected to a Microsoft Form. Otherwise, access is denied.

🚀 Live App

👉 Open here: https://attendance-8avu5rhldpsugjrcgvx7qj.streamlit.app/

✅ How It Works

User opens the Streamlit page

Browser requests GPS permission

Distance is calculated using Haversine formula

If inside allowed radius → redirect to Microsoft Form

If outside → access denied

🔒 Logic IF distance ≤ allowedRadius: redirect to MS Form ELSE: block access

✨ Features

✅ Automatic GPS verification ✅ Distance calculation (meters) ✅ Microsoft Forms redirect ✅ No form shown before verification ✅ Works on mobile & desktop ✅ Simple, lightweight ✅ Easy deployment on Streamlit Cloud

📍 Configuration

Inside app.py you can change:

Target location const targetLat = 39.132473; const targetLng = -84.5170492;

Radius (meters) const allowedRadius = 90;