I do not know, do you? I know that I do not have the mark! We all have been conditioned and will continue to be condition in a greater manner to receive the mark of the beast. When the actual mark of the beast rolls out onto the world stage people will be so conditioned they will line up to receive. People will not be able to get the mark of the beast fast enough. The one world religious government system will have had convinced most everyone that the mark of the beast is good for them. Especially is they want to buy food.
However, I think Apoc 13:16 also might refer to the past and the fact that Potelmy 1st (217 b.c.) branded Jews with the stamp of Dionysos. (Not all of them, just those that submitted to him)