Wireless, Battery‐Free Wearable Pressure Sensor for Compression Therapy Entirely Built on Surface Mount Devices

With a growing market size currently valued at over US$4B, compression therapy has been a standard treatment for chronic venous diseases and other dermatological, vascular, and circulatory conditions. Precise and consistent application of pressure is essential for therapeutic efficacy, yet current sensing technologies to monitor pressure are limited by their complex fabrication methods, bulkiness, and reliance on batteries. Here, we present a flexible, battery‐free pressure sensor system based entirely on surface‐mount devices (SMD), enabling accurate, real‐time monitoring of compression levels in therapeutic garments. The platform leverages near field communication (NFC) for wireless data transmission to consumer devices such as smartphones, offering a compact and lightweight solution well‐suited for wearable applications. The use of a commercial barometric sensor facilitates seamless integration and supports scalable, cost‐effective manufacturing. Integration with a hydraulic woven actuator further enables a feedback pressure control loop, forming a smart garment capable of achieving and maintaining target compression levels. The proposed technology establishes a foundation for self‐managed, home‐based compression therapy without the need for continuous clinical oversight.