The difference in this scenario is that bars and retailers can actually do that and it's perfectly legal (AFAIK in the US), while a porn site doing that is expl

The difference in this scenario is that bars and retailers can actually do that and it's perfectly legal (AFAIK in the US), while a porn site doing that is explicitly illegal according to all of the bills I've read. If you hand it to a store clerk to read and they scan it real quick, you can't even react before it's done, and then what are you going to do? You have no recourse. The clerk almost certainly can't even remove the information. In addition to the legal side, digital ids do have some protections against this designed in.