Just saw the last part of a segment on morning TV about a band that you wear on your wrist. You lick it, and about an hour later it has analysed your DNA. The idea is, you go into a supermarket, scan the barcode of products, and the band will flash either red or green to tell you whether it’s a healthy choice based on your DNA.
From what I can see, the band picks up predisposition for heart disease, type 2 diabetes etc, and makes choices for you based on that data. I don’t know whether the band is good for people with allergies. Are allergies encoded in DNA?
It’s supposed to be released in Australia later this year. At the moment you need to physically scan the barcode*, so it’s useless for online shopping.
*The UK version has things like Starbucks coffees uploaded too, because you can’t scan a barcode for them. Although if you can’t tell that a Starbucks drink isn’t good for you, well then there’s not much hope for you…. :)
https://www.digitaltrends.com/wearables/dnanudge-dna-shopping-ces2020/