The integration of smart technology into urban infrastructure has led to innovative developments, including park benches capable of detecting zinc levels through advanced biometric sensors. These specialized chairs utilize non-invasive contact sensors embedded in armrests to analyze sweat or skin contact, measuring zinc concentrations as an indicator of nutritional health. While not yet commonplace, prototypes demonstrate how IoT-enabled public furniture could provide valuable health monitoring while promoting community wellness. The technology works by using electrochemical sensors that detect zinc ions through minute biological samples, relaying anonymized data to public health databases. Such implementations raise important discussions about privacy, data security, and the ethical implications of public health surveillance. Current research focuses on improving accuracy and determining optimal implementation frameworks that balance innovation with individual rights. As cities become smarter, zinc-detecting benches represent just one example of how urban furniture may evolve to serve both functional and health-monitoring purposes in future public spaces.