OK, so apparently one doesnt like this, so let me re-phrase: What area in CM(2) is good for fidelity, and to really push the question, how easily does this bec

OK, so apparently one doesnt like this, so let me re-phrase: What area in CM(2) is good for fidelity, and to really push the question, how easily does this become a mic? So imagine a sensor the size of a dual gang outlet (https://i.imgur.com/8bAhAnr.jpeg https://i.imgur.com/8bAhAnr.jpeg) which can track a TON of things? Now imagine that face-plate being coated in this material?