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Obstacle Identification and Avoidance Using the ' EyeCane '

One of the main challenges facing the blind and visually impaired is independent mobility without being obtrusive to their environment. We developed a tactile low-cost finger-size sensory substitution device, the EyeCane, to aid the Blind in obstacle identification and avoidance in an unobtrusive manner. A simplified version of the EyeCane was tested on 6 sighted blindfolded participants who were naïve to the device. After a short (2-3 minutes) training period they were asked to identify and avoid knee-to-waist-high (Side) and sidewalkheight (Floor) obstacles using the EyeCane. Avoidance included walking around or stepping over the obstacles. We show that in the fifth trial, participants correctly identified 87±13.6% (mean ± SD) and correctly avoided 63±15% of the side obstacles compared to 14% in the control condition (p<4E10 and p<1.1E-05 respectively). For Floor obstacles, participants correctly identified 79±18.8% and correctly avoided 41±%37.6 compared to the control's10% (p<0.002 and p<0.06 respectively).