You approve or deny depending on matching data. Early on, if data doesn't match, they just go. Later on, there is stricter procedure. They might turn up missing documentation if you question them instead of straight denying them. As the game goes on, there can be more discrepancies with their documents, and you have to be keen on all of them. It's fun in a challenging way. You look over a paper, let them in, get in trouble. "What? Damn it, the one time I didn't check gender." xD
I got a penalty because the height didn't match up.
But yeah, at first glance I didn't think this would be a game I would enjoy. But after playing it, and realizing the condition of your family, you realize how hard this actually is. I was piling those documents all over my desk like a champ and investigating every single obvious detail at once, then checking the more challenging details shortly after. I get so proud when I can afford the food, heat, and medicine.
But yeah, then they bitch at me because one guy's height didn't match up. Who the hell would forge a completely legitimate document, one that they could obtain normally through their daily life due to the fact that everything was correct, except their damn height? Did the guy grow or did his legs get chopped off or something? I don't even know if he was too tall or too short for what was written.