A white cane also alerts people in the vicinity - I wonder what the designer's thoughts are on this aspect of the problem. When I saw (what I assume are) the pr

A white cane also alerts people in the vicinity - I wonder what the designer's thoughts are on this aspect of the problem. When I saw (what I assume are) the proximity detector LEDs on the front of the shoe, it made me think about some kind of flashing (visible) light-based solution.