Many have debated over whether this interperatation means that a literal chip with an RFID chip is implanted into you, or if having the mark of the beast upon your head and hand represent your mind and actions as it relates to the commandments of God.
Revelation 13 ver. 16-18
And he causeth all, both small and great, rich and poor, free and bond, to receive a mark on their right hand, or in their foreheads.
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 threescore and six.