Authors : Fidha A.; Sangeetha Gopinath

Volume/Issue : Volume 11 - 2026, Issue 3 - March

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Google Scholar : https://tinyurl.com/3hncupmy

Scribd : https://tinyurl.com/3ks34xe5

DOI : https://doi.org/10.38124/ijisrt/26mar200

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

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Abstract : Traditional retail checkout systems often lead to significant consumer dissatisfaction due to long queues and manual scanning processes. This paper proposes an IoT-based Smart Billing Trolley designed to automate the shopping experience. By integrating Radio Frequency Identification (RFID) for item detection and Wi-Fi (NodeMCU/ESP8266) for real-time cloud synchronization with a Python-based Flask server, the system eliminates the need for a central checkout counter. The proposed model ensures secure data transmission and provides an interactive UI for the shopper. Experimental results show a 75% reduction in checkout time compared to traditional systems.

Keywords : IoT, RFID-RC522, Arduino Uno, Automated Billing, Python Flask, Smart Retail.

References :

1. "Circuit Schematic and Pinout," Internal Project Documentation, 2026.
2. "System Block Diagram and Power Flow," Technical Design Specifications, 2026.
3. K. Smith, "IoT in Modern Retail," IEEE Journal of Electronics, vol. 12, no. 4, 2024.
4. R. Gupta, "RFID Applications in Automated Systems," International Journal of Computer Science, 2025.
5. "MFRC522 and ESP8266 Open-Source Libraries," Open-Source Community Documentation, 2024.