“H2OConnect”- An IoT enabled Smart Card and QR Code based Secure Water ATM

A survey highlights the alarming potential of 700 million people facing displacement due to severe water scarcity by 2030, while projections indicate that by 2040, one out of every four children globally will reside in regions characterized by severe water stress. The paper introduces the “Smart Water ATM,” an innovative solution that aims to revolutionize access to clean and safe drinking water, addressing fundamental human rights challenges. This multifaceted system integrates Radio-FrequencyIdentification (RFID) technology, Quick Response (QR) codes, Unified Payments Interface (UPI) payments, fingerprint-based security, a voice assistant, and an integrated water purification filter. The Smart Water ATM enhances accessibility and convenience by using RFID technology for user identification and monitoring water consumption. It promotes cashless transactions through QR code scans and UPI payments, ensuring compatibility with various financial platforms. Water quality is improved through the inclusion of an integrated water purification filter, mitigating health risks associated with contaminated sources. A fingerprint authentication system enhances security, ensuring only authorized users can access the water dispensing services. The paper provides a comprehensive technical overview of the Smart Water ATM system, including architecture, data flow, and synchronization mechanisms. It details the integration of above-mentioned technologies emphasizing their synergy in creating an efficient and secure water distribution solution. This integrated solution has the potential to significantly improve water access, distribution, and quality in both urban and rural settings. By offering secure digital payments and purified water, it addresses critical challenges in delivering safe drinking water, ultimately contributing to improved well-being for communities in need.