Hello everyone, and thank you for your interest in this matter,
is that it is not new, my intension is not to invent anything, if not do something like this in B4A with code that can change, precisely one of the problems is that where I would like to use (and now I will expose the idea that I have) is that no wifi infrastructure, telephony or to repeat data.
I'll give an example of why I want to do something like this, a couple of friends and I went for a walk through a forest close to home, from a point there is no signal or wifi telephony, radio pmr446 got along one of them was lost, and although we could talk to explain was dende not know, although I had the smartphone did not know how to use the GPS of this to give us their location, after about 20 minutes we found it and thankfully everything was left in a fright.
It occurred to me that if the smartphone also carry in your pocket a small cable to connect the smartphone to the radio pmr446, and a program with just one click could convey the position of this, we could have found him sooner.
This is an example, but ne can think of several other things I could do with something like that, precisely because something simple and does not require too much hardware thanks to technology that is at alcanse of most people today.