A shoe-integrated tactile display for directional navigation

This paper proposes a novel wearable interface for the foot: an on-shoe tactile display that enables users to obtain information through the sense of touch of their feet. A 16-point array of actuators stimulates the sole of the foot by inducing different vibration frequencies. Experiments to study how people understand information through their feet were conducted with 20 voluntary subjects. Results show that some shapes and patterns are discriminable and that tactile-foot stimulation could be used for a wide number of applications in human-machine interaction. In particular, results show that it is possible to exploit podotactile information for navigation in space.