MEC1281

According to Wabale (2017), the study introduces the system of smart trolley that uses smartphone and Arduino to minimise customer’s queuing time for billing checkout. This system is beneficial to customers as it provides on spot scanning of the product with price details shown on LCD. The data from the LCD will then be transferred to the billing counter computer. Hence, saving time for the customer to perform check out. In addition, the system provides benefits to customers with a membership card which is also a RFID tag. Having said that, the normal trolley will become a smart trolley when the RID tag is being inserted to the RFID reader. Moreover, the system is cost efficient as this system requires less cost to design and less power supply . Thus, displaying the total amount to the user making it a user friendly system. The proposed design integrates current technology with the existing shopping trolley. The top frame of the trolley includes a RFID scanner, powered by an attach...

Background Grocery shopping is an important aspect of peoples' lives all around the world. Supermarkets are packed with patrons every day, looking to purchase their household goods. One of the supermarket chains in Singapore, NTUC FairPrice, states on their website that it serves 600,000 customers per day (NTUC FairPrice, n.d.). This is the number of patrons visiting this supermarket chain alone, not to mention there are several other supermarket chains such as Cold Storage, Giant and Sheng Siong. Thus, it is not surprising that the checkout queues in supermarkets are long. Looking at an extreme case, for example, the recent Coronavirus outbreak has caused Singaporeans to overreact and thus cause an influx of customers to do their shopping (Tan, 2020). The surge of patrons and the fact that they are purchasing goods in bulk effectively creates a standstill in queues, extending customer wait times immensely. When customers shop for groceries in bulk, they tend to opt for trolleys pr...