Smart Trolley with Automatic Master Follower and Billing System

The system “Smart Trolley with Automatic Master Follower and Billing System”, has been developed for shopping malls. Once the client enters the mall, the trolley follows the client with the help of Bluetooth and Ultrasonic sensors placed in the cart. All the trolleys are designed with a RFID reader, digital display screen, Bluetooth and ultrasonic sensors. All the products within the shopping complex are connected with RFID tags. Once the customer puts any item into the cart, its distinctive ID range is detected. At the same time, the chosen product name with the cost, expiry date, discount amount if any available are displayed on the liquid digital display screen, thereby the value gets added to the whole bill. If the client wants to take away the item from the cart, the client must press the button which is available on the trolley and then the client has to scan the product once again and therefore the cost of that specific product gets subtracted from total quantity bill. Once the purchase is completed, the customer has to select the upload button and the whole quantity bill is send to the billing counter. With the assistance of payment app the payment is completed. Once the bill amount is paid, the data is distributed to the exit gate and the trolley gets disconnected to the customer and the client can exit the gate.