Every time i'm reading something like this, i'm wondering where my f-ing Tricorder from Star Trek is. What would it take to get the equivalent of mass spectrometry into a miniaturized clip on module for a smartphone which you could point at anything for a few seconds, and get the results on your app just from the backscatter? I don't care about the means, just the results.

Oh, and not as something exotic but massproduced and cheap, so that everyone can afford it, use it casually on a daily basis and make a wide berth around all the fraud that is always out there even before putting it into the shopping cart.