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Schematic diagram of a wearable sensory substitution system showing pressure-sensing insoles placed inside shoes, flexible haptic arrays worn on both forearms, and a smartphone interface. Close-up views highlight the insole sensor layout and a dense grid of small actuators on the forearm device that deliver vibration and heat.
Pressure-sensing insoles in the shoes transmit real-time data to flexible haptic arrays worn on the forearms, where patterns of vibration and heat recreate a sense of foot-ground contact through sensory substitution.