This is a useless advice as there is no accountability/testing for these claims.... you cannot even be sure what kind of fish that you are buying nowadays (organic is even harder to prove). DNA testing would solve that, but the FDA apparently don't have the budget. For example: https://www.nydailynews.com/life-style/health/one-third-fish... .
keep dreaming (I would think that this is only possible right next to a warehouse, and I don't think that it makes sense to have a warehouse on every street corner with every possible products in inventory)
even if the encryption used was really secure, the government could request the keys. Unless company executives are no longer afraid to go to jail, they would give them out.