That's an interesting concept I wasn't aware of. Makes sense though. I'm sure they'll come up with whatever the best solution for them is, and tweak it as time goes by.
Definitely not necessarily poor countries. Africa has actually had it quite good with this, interestingly. I live in South Africa, which is not a rich country by any means, and we have really good COVID numbers. Meanwhile, places like Italy, the UK, Canada, and the US, are far wealthier nations, and have seen far worse numbers of infections. Ultimately, a lot of it comes down to how the pandemic is managed by governments, as well as what the culture of citizens is to respect the choices their leaders are making. In SA, it's been good so far. In the US, it's a nightmare. I find it very interesting to see all this, from a psychological and democratic perspective.
But anyway, I do agree with you that they may find some kinda workaround like that. It'll be interesting to see what they choose. Otherwise maybe they just require everyone who enters to go into quarantine. I wouldn't mind that at all, and would happily comply.