So, could just be me but, if companies decide to impose certification of vaccination requirements, the admin can simply (wink, wink) maintain THEY aren’t requiring anyone to do it but private companies (apparently) can do as they deem safe for their customers. (ahem, ahem!) So, no gas for you. No groceries for you. No lumber for you. It’s for the greater good “friends”. Pretty sure a lot of us know how the game is played. And who has the financial means to sue? “They” will just keep it going until you’re bankrupt. Using our tax dollars to do it too.
If companies create databases, that applies only to the individual company; there won’t be a central database.