I have been monitoring the progress of this kickstarter gadget, for about 2 years, they finally came out with their device. its a portable spectrometer sensor, I do not have the details of all its capabilities. but from what I understand, you can make your own applets, for example scan one item, and scan another and see the difference.
I have seen examples of it used for scanning fruit and veggies at supermarkets, to determine ripeness or chemicals. you can also use it to identify medications, and can even tell the difference between a generic medication and originals, ( I assume its sensitive enough to detect the slight differences )
So I wonder if this would be useful for the garden community, would it be possible to scan leaves, and check for nutritional deficiencies? what about Identifying varieties? or would there be too much variations due to nutrients and climate etc? or maybe for breeding to quickly determine if one cultivar crossed with another? anyway will be interesting to see where this leads.
https://www.consumerphysics.com/myscio/technologySoon after writing this I came across some Q&A, seems it wont work for plant identification at this point. too bad. but this is just a first generation pocket sized unit, so maybe eventually we will get what we really want.