---but all April Fool's festivities aside, folks. I have thought about a phone app for the blind that acts as an echo-locator for "friends". It's based on remedying the scenario where one blind person may be going down the opposite side of a street where another fellow blind person maybe walking in the opposite direction, and where of course, they can't "spot" each other in passing. Those who subscribe to the app, can work the perimeters that determine who your "local friends" are. When in open vicinity [[given it won't create the confusion of height difference on a 3-dimensional scale-such as when both are in the same building but on different floors. A bug to work out, yet, than again, a simple call can confirm location and arrange a rendezvous from there.), an alert is given to both phones indicating that their "friend' is in the nearby area.

There's a lot af bugs and unforeseen dilemmas that can occur with this. So, it's just something I've thought about....