South Korea does it, and from what my friends who lived there (ranging from living there for a year to multiple years) told me, it is about as bad as you would

South Korea does it, and from what my friends who lived there (ranging from living there for a year to multiple years) told me, it is about as bad as you would expect. For one, you cannot even access a ton of services and websites unless you got your alien resident card. Online shopping, games, most websites, tons of services, etc. It is such a shitshow, being without that alien resident card might as well make you non-existent. And it takes a while to get it even if you live close to a government office that schedules appointments for those, given it is a good old bureaucracy.