Smart Scan Shopping Trolley Using IOT

Abstract: The Smartscan Shopping Trolley is an innovative system designed to simplify and automate the billing process in supermarkets. This project integrates a microcontroller-based system with a barcode or QR code scanner mounted on a trolley, allowing customers to scan items before placing them into the cart. Once scanned, the system retrieves the product information and automatically updates the total cost, which is displayed in real time on an LCD screen, If an item is removed, the user can rescan it to deduct the price from the total. To ensure accuracy and prevent unauthorized additions, the system includes an error detection mechanism that triggers a buzzer or voice alert when an invalid or unregistered product is scanned. Additionally, loT functionality can be incorporated to transmit billing data to a mobile application or cloud platform, enhancing user convenience and enabling real-time monitoring. This project reduces waiting time at billing counters, improves shopping efficiency, and demonstrates the practical application of embedded systems and loT in smart retail environments.

Keywords: IoT (Internet of Things), Smart Shopping Trolley, Barcode Scanner, QR Code System, Automated Billing System, Embedded Systems, Real-Time Processing, RFID, Smart Retail, Arduino, ESP8266