[londons_explore]

There is a gap in the market in general for "health testers".

I want a $1 chip I can put a bit of an Apple on and have it tell me how many pesticides, how organic, and stuff like that.

It seems all the tech is possible for that kind of thing (microfluidics, micro gas spectrometry), but there isn't a big enough market to sell it all for rock bottom prices

[intrasight]

Depends what is "rock bottom". I do believe there's a huge untapped opportunity. And I assume that some tech entrepreneurs will figure it out. We have the computers in our palms. We just need the sensors. I think there's be a strong demand at the $500 price point - assuming that the consumables don't cost too much.