A Survey on Automated Line-Following Trolley with Smart Billing System

Abstract: The Automated Line-Following Trolley with Smart Billing System is designed to make shopping faster, easier, and more efficient. It can move both forward and backward, following a predefined path on the store floor using line-following sensors. The trolley detects obstacles and stops immediately when its path is blocked. For safety and to prevent misuse, it resumes movement only when the same user re-scans their RFID tag. In terms of billing, the trolley includes a barcode scanner that verifies each item against a preloaded database to ensure product details are accurate. After shopping is complete, the system calculates the total bill-including item names, quantities, discounts, and the final amount and sends it directly to the user’s phone. This eliminates the need to wait in checkout lines and reduces the chance of billing errors. Overall, this project integrates navigation, security, and billing into single smart solution that enhances the shopping experience. Keywords: Smart Trolley, Line Following, RFID, Barcode Scanning, Obstacle Detection, Auto Billing.