Continuity mistake: As we see John Carlyle code, he has a short paragraph up on his screen, and he's adding text at the end of it. In the closeup, we're treated to a very nice bit of Assembly code, and he's adding a few lines in the middle. When we see his screen from the back next, his nice short paragraph from before has grown a table on top, and he's back to adding text at the bottom. (00:40:30)
Continuity mistake: When Max hides under the pig cart, the thermal scan from the ship shows at least 8 or 9 pigs, they barely have room to turn. But when he stands up seconds later, the cart has perhaps five pigs and plenty of space around them. (00:56:00)
Continuity mistake: When Matt Damon is talking to Freya's daughter before he leaves the house, there's a bit of spit on his lower lip which vanishes in some shots, only to reappear in the same place shortly afterwards.
Chosen answer: There is virtually no system in the world that is completely foolproof when it comes to regulating a large scale system related to identification. We only know the tattoo are for certain services. There might be more high tech security features for more restricted areas. As for whether they have an accurate count of all their citizens, they might, but again, how you go about regulating these systems is generally the tougher part. At the end of the day people required special transports to even reach Elysium, so it might have not been as big a concern.
Lummie ★