Cryptocurrency will most likely be the life blood of the mark of the beast . . . or Central Bank Digital Currency (CBDC)

With all of the "Tap to Pay" payment devices everywhere, the Mark of the Beast infrastructure is already in place.

All that needs to happen is for them to outlaw cash, or for everyone to stop using cash voluntarily until they see no need to keep it around.

Both scenarios are almost a reality, with very few people using cash, and The Fed's Hamilton Project that just launched last November.