That's a good use for gold. I wonder if they can make an earring version too some day.
Wherever there's a problem, there's solutions. Answers are found from a wide deep perspective, from opened mind's eyes. From where good and bad stay silent and you hear the real cause and effect, and big picture. Giving up is wasting your time, but also necessary to find the true cause you didn't find yet. Staying in the path is necessary only when there's trueness in that path.
Quiet frankly, It's a nice idea but there are more important things to be spending money on then some device that can detect an infection.. Such as putting away money to cure all the diseases & fixing up homeless shelters. Or trashed neighborhoods.