Results of the experiments showed that when the volunteers used only their standard canes, collisions occurredmostly at the head level and only a few times at waist level or below. This was due to the fact that the standard white cane cannot detect obstacles above waist level. When iSonar was equipped, the collision rate above waist level
reduced dramatically. Specifically, the average total collision rate was reduced from 33.33% to 6.67%. Experimental results also showed that the average travel time of volunteers with and without the device was similar. This is because when the volunteers were warned by iSonar, they had to pause for a moment before resuming walking
to avoid the obstacles.