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Abstract: Shopping is really exciting and fascinating, but it becomes tiring due to standing in longqueue for payment of the bills. But due to this Smart Trolley Billing System project, it has becomeefficient because the customer need not have to wait for his/her turn in the queue , the customer canpay the bills at the trolley itself due to the advanced devices in the trolley. This is not possible in theexisting trolley. For this, some devices has been used like RFID reader and tag, Arduino, IR sensoretc. Thus RFID reader is being employed to scan the products for billing, to send the data online tostore it in the transaction database for future reference for the shop-owner and for providingcustomers the e-bill. Essence of this approach involves using the RFID system to keep the details ofeach product. Each label in the products are stored with its name, id, and price. So when it comes incontact with the RFID reader, the reader reads out all those information and add it to the cart. Oncethe products are selected, the customer can proceed to the billing part. Each customer is given withtheir smart cards, which contain their id and their balance amount in the card.