This paper describes a system that was put in place during the summer of 2020 by the Greek Government to control entry at the borders and save the tourist season. I am sharing this here both for the paper, and for the code that has been released which might be of interest to lobsters
PS: I do not wish this to slip into politics or whatever. I am only sharing this for the AI and code aspects of it. If the moderators think this is going to be a topic that will deflect discussion from our charter, I am very OK to retract this.