Thank you all for your response. I apologize for the delay in my response.
I have a varied set of interests... currently I'm looking to create a black spray-able "blackbody" that absorbs all wavelengths of electromagnetic energy such that, a person would simply take two electrodes: cathode and anode, attach them anywhere to the "gooey" material, and when solidified, energy will start to flow into the electrodes/away... the idea is that it works like Christmas lights where all of the small micro antennas create energy together and output energy where ever it can go... much like an acid and cathode/electrode situation.
Anyway back to this...
I was trying to make proximity detection bluetooth pins, that you attached to your clothing, and it is integrated with an application on your phone so that when you are walking and primarily as an example, you have headphones in and are blind to your surroundings in terms of hearing; so theoretically someone could sneak up behind you and harm you. But the proximity detection (incorporating doppler effect) would detect someone approaching you... as an example, have you ever walked and were scared by a dog that almost bit you, because you didn't see it, but it was running towards you...
Anyway, much of my projects are out of my reach, both financially and intellectually.
I appreciate your responses.