16 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads: 17 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. 18 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 threescore and six.
Revelation 14:9 says this:
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.
Extremists have also claimed that the number of the beast, which is 666, is hidden in every UPC barcode. Let’s have a look at the picture below.
The number 6 is encoded as two bars (blue). Every UPC barcode has 3 guard bars to assist the scanner with reading it (red). And by looking at this image alone, it does appear that there are three sixes encoded into every barcode.
“There is nothing sinister about this nor does it have anything to do with the Bible’s “mark of the beast” (The New Testament, The Revelation, Chapter 13, paragraph 18). It is simply a coincidence like the fact that my first, middle, and last name all have 6 letters. There is no connection with an international money code either.”