It seems like the foreigner residence cards are only superficially similar. For example, the ID number on the residence card is not a permanent identifier over

It seems like the foreigner residence cards are only superficially similar. For example, the ID number on the residence card is not a permanent identifier over your lifetime (your number will change when you renew your card). In general, that number is also not directly connected to many other things, not in the way that the government is planning for the My Number system.