Great point! My mind goes to the mark of the beast where those who don’t take the “mark” won’t be able to buy or sell. I think Wally Shoebat a former Muslim, now Christian, says that Islam is the Mark of the Beast.
Revelation 20:4
I saw thrones on which were seated those who had been given authority to judge. And I saw the souls of those who had been beheaded because of their testimony about Jesus and because of the word of God. They had not worshiped the beast or its image and had not received its mark on their foreheads or their hands. They came to life and reigned with Christ a thousand years.