In the era of smart cities and health-conscious living, the idea of park chairs doubling as pulse oximeters is no longer science fiction. These innovative benches integrate discreet health sensors into their design, allowing users to check their blood oxygen levels (SpO2) and heart rate simply by resting their hands on embedded sensors.

The technology behind these chairs combines durable outdoor materials with medical-grade pulse oximetry, typically using reflective photoplethysmography (PPG) sensors. Some models even connect to smartphones via Bluetooth, enabling health tracking over time. While still rare, prototypes have appeared in tech-forward cities, particularly in parks frequented by seniors or near medical facilities.

Beyond convenience, these smart benches address important public health needs. They encourage preventive care by making health monitoring accessible during routine outdoor activities. However, challenges remain regarding weatherproofing, data privacy, and maintenance costs. As the technology matures, we may see more cities adopting these dual-purpose furnishings as part of "health-aware" urban planning.

Would you trust a park bench with your vital signs? The future of public furniture might just surprise you.