Foot pressure sensor technology refers to a set of devices which measure and capture the pressure patterns on the plantar surface of the foot. The technology includes thin-film resistive sensors, capacitive sensors, and piezoelectric sensors, each with a balance between accuracy, sensitivity, durability, and cost. Inshoe sensors, a type of resistive sensor, provides real-time pressure information for dynamic walking at reasonable accuracy of ±5 kPa compared to the actual value. On the other hand, piezoelectric force plates are very precise with measurements of around ±1 kPa, but restricted to laboratory environments. Due to advancements in sensor size, weight, and wireless communication, there are now portable and wearable devices such as socks with inbuilt sensors that relay data directly to mobile devices. Foot pressure sensor technology plays an important role in research, such as studying human gait in neurodegenerative diseases, and clinical work, such as the examination of foot health in patients with diabetes, with ongoing innovations increasing the sensor’s resolution and efficiency and decreasing their power consumption.
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