1. a digital key in the form of an encrypted and unique data matrix code. The content can be defined accordingly and filled with all possible information such as production date, ingredients, etc. Furthermore it can act as a pointer in a block chain, which in turn contains all information like current owner, best before date etc.... 2....and one, let's call it, eXsis code "fingerprint", which is unique, random and unchangeable. This is the primary key to the function of the entire system, as it cannot be reproduced in mass and is unique, similar to a human fingerprint.
product expire date