Scripture reference?
What is the Koine Greek word for microchip?
Seriously, the "mark" of the beast on the head and the hand corresponds to the phylacteries that contained the Law in Deuteronomy 6:8:
4 “Hear, Israel! The Lord is our God, the Lord is one! 5 And you shall love the Lord your God with all your heart and with all your soul and with all your strength. 6 These words, which I am commanding you today, shall be on your heart. 7 And you shall repeat them diligently to your sons and speak of them when you sit in your house, when you walk on the road, when you lie down, and when you get up. 8 You shall also tie them as a sign to your hand, and they shall be as frontlets on your forehead. 9 You shall also write them on the doorposts of your house and on your gates. - Deuteronomy 6:4-9
In Deuteronomy 6, these actions were symbolic of meditating on the Law (forehead) and acting according to the Law (forearm/hand).
The "beast" in Revelation is the world's power structures (governments and authorities) that are opposed to God. Getting "the mark of the beast" is doing things according to the thinking and methods of this world instead of according to the thinking and methods of the Kingdom of God. It is rejecting the way of God for worldly power, like rejecting the teachings of Jesus to blindly support a President and claim that those who don't do the same are disobeying God.