I think there are a lot of fake people. AI-generated people. I think they're all over the world, acting as proxies for clandestine activities. Some of the 2020 election oddities can be explained this way. Ghost people, ghost voting, ghost money laundering. Digital citizens. And maybe vaccine passports are partially their "answer" to this problem. If a vaccine can't be injected into a physical arm, then they know who is real and who is fake.