The mark of the beast is how a man is numbered. Our iris, hand or finger print is unique to every human (biometrics) . The mark won't be a chip or tattoo. We will be forced to register our biometrics in order to buy or sell anything. After the collapse of the dollar the world will unfortunately line up to register their biometrics. India is almost completely done. My point is no one will have the same number or mark rather it be 666 or 616 or !@*<&%. Thanks for the post.