Reducing Shopping Time by 67% Through IoT Innovation

An innovative IoT-powered shopping cart system designed to revolutionize the retail experience by eliminating queuing time and streamlining the checkout process.

This comprehensive solution integrates multiple sensors, web technologies, and database management to create a seamless shopping experience.

Web Application Features

  • Responsive design for multiple device types
  • Real-time updates using AJAX polling
  • Session management with Flask sessions
  • RESTful API design for hardware communication
  • Error handling with comprehensive logging

Technologies, Frameworks & Software Used

Python
C++
Maria DB
Arduino
Python-Flask
JavaScript
HTML5
CSS
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WhatsApp Image 2025-06-25 at 15.47.56
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Project Scope

🎯Problem Statement

The supermarket industry, valued at $1.01 trillion in 2025, faces significant challenges:

  • Average queue time: 20 minutes total shopping trip
  • Checkout delays: 15 minutes average
  • Grocery weighing delays: 5 minutes average
  • Limited customer analytics without loyalty programs
  • Operational inefficiencies managing 30,000-50,000 products

💡Solution

Developed a comprehensive IoT shopping cart system that:

  • Reduces shopping time by 10+ minutes per customer
  • Eliminates checkout queues through automated scanning
  • Prevents fraud with multi-event fraud detection
  • Provides real-time analytics for retailers
  • Streamlines inventory management
1

Session Initiation

Customer creates shopping session by ither registering or signing up as a new customer.
2

Product Scanning

RFID tag triggers product identification and displays product information such as name, weight, and price on to item scanned section.
3

Fraud Detection

Ultrasonic sensor monitors any fraudulent activities such as items placed in the cart without scanning RFID tag.
4

Weight Measurement

Click grocery item and place on weight sensor to return the weight and calculated price for the item.
5

Cart Management

Click Add to cart to view running bill or remove product.
6

Checkout and Exit

View summary and Finish payment upon checkout.

Smart Product Scanning

  • RFID-based product identification
  • Automatic price calculation
  • Real-time inventory tracking
  • Support for weighted items (Groceries)

Fraud Prevention

  • Ultrasonic sensor detects 3 types of fraud activities
  • Unscanned item alerts
  • Multiple item placement detection
  • Immediate visual/audio feedback

Automated Checkout

  • Seamless cart-to-checkout flow
  • Real-time total calculation
  • Session-based tracking
  • Instant receipt generation

Analytics Dashboard

  • Customer behavior insights
  • Sales analytics & reporting
  • Fraud incident monitoring
  • Real-time system metrics

Smart Weighing

  • Automatic weight measurement
  • Load cell calibration
  • Price calculation by weight
  • Real-time weight validation

Admin Controls

  • RFID tag management
  • Hardware component testing
  • System monitoring tools
  • Manual override capabilities

Hardware Integration

Complete IoT hardware stack with 6 integrated components working in harmony.

  • Arduino Uno microcontroller
  • Raspberry Pi 4 edge computing
  • MFRC522 RFID reader
  • HC-SR04 ultrasonic sensor
  • HX711 load cell amplifier
  • SG90 servo motor + LED + Buzzer

Watch the Demo!