Of course, if you are living in India and reading this, it may not be so voluntary. Check out India's Ambitious National Identification Program to see how they are working on registering and assigning "a one-of-a-kind ID number to every Indian resident - some 1.2 billion people - by 2020..."
Before you brush off these news stories, please take time to read the following two passages from Revelation:
"And he causeth all, both small and great, rich and poor, free and bond, to receive a mark on their right hand or on their forehead. And that no man might buy or sell save he that had the mark, or the name of the beast, or the number of his name. Here is wisdom: let him that hath understanding count the number of the beast, for it is the number of a man, and his number is six hundred, three score, and six." -Revelation 13:16-18
"And the third angel followed them saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead or in his hand, the same shall drink of the wine of the wrath of God which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb. And the smoke of their torment ascendeth up forever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name." - Revelation 14:9-11
