The integration of smart technology into urban infrastructure has led to innovative solutions for public health concerns, including metal allergies. Nickel detection in park chairs is an emerging concept that addresses the needs of individuals with contact dermatitis caused by nickel sensitivity. While not yet universally adopted, prototypes and specialized benches are being developed with embedded sensors or alternative materials to prevent allergic reactions. These chairs typically utilize non-metallic components or coating technologies that create barriers against nickel exposure. Some advanced models incorporate electronic detection systems that alert users via mobile apps when nickel traces are present. Municipalities are increasingly considering such designs to promote inclusive public spaces. Current implementations focus on stainless steel or powder-coated alternatives that inherently minimize nickel content. The future may see wider adoption of IoT-enabled benches that continuously monitor material composition, ensuring safer outdoor experiences for all visitors.