The EU age id app is this, with some extra privacy hurdles (the id is only on your phone not on the remote server).

And this will then be used by the Apple and Google to make "security" on the OS "stronger" so that "we can protect the children" better (i.e. lock down the OS even more and take control away from us consumers). In this new idiocracy, this this is how corporates and government work together to take away our rights ...