Mark Of The Beast

The beast will force all to accept a cashless commercial system by being marked on the right hand or the forehead.
Also it causes all, both small and great, both rich and poor, both free and slave, to be marked on the right hand or the forehead, so that no one can buy or sell unless he has the mark, that is, the name of the beast or the number of its name. (Revelation 13:16-17 ESV)

However, anyone who receive the mark of the beast will face the full fury of the wrath of God.
And another angel, a third, followed them, saying with a loud voice, "If anyone worships the beast and its image and receives a mark on his forehead or on his hand, he also will drink the wine of God's wrath, poured full strength into the cup of his anger, and he will be tormented with fire and sulfur in the presence of the holy angels and in the presence of the Lamb. And the smoke of their torment goes up forever and ever, and they have no rest, day or night, these worshipers of the beast and its image, and whoever receives the mark of its name." (Revelation 14:9-11 ESV)
So the first angel went and poured out his bowl on the earth, and harmful and painful sores came upon the people who bore the mark of the beast and worshiped its image. (Revelation 16:2 ESV)