What if you replaced a person’s cane with a small flashlight device that acted as a proximity detector? It would produce a tone which changed in pitch as they got closer to an object,

(Example –

A chair in the middle of the room they might bump into).

If you really wanted to get fancy, you could mount it into their shoes. Sounds crazy, but the circuitry would be pretty simple and rather small, so it would only add an ounce or two to their footwear. The ‘Dick Tracy’ 2-way radio watch was considered by many people in the 1960’s as impossible.

Fast forward to the year 2007.

Today we have cellphones that aren’t much bigger than a watch, which can surf the web, tell us where we are (GPS enabled), built-in calendar/calculator, play our favorite songs, take pictures and all kinds of other functions.

Good luck in your studies,

~ Mitch ~

P.S. – Hopefully, no one has thought of this one before,

but I seriously doubt it.

The best ideas are the most practical.