Yes! it's needed, you can have multiple sensing arrays to detect 100's of different things and more miniturised than current applications, with no electrical current being transmitted in the sensor arrays which allows these sensors to be submerged in liquids without damage, unlike the current styles. It's alot more accurate aswell... Could go on and on, you just need to research the vast amount of "Informative" posts here and search the web to find out more of what you are asking, search goolge for Gino Putrino, and that will be a start.
