For example, The Mark prophecy says the purpose of the Mark is to control buying/selling.
It's to control people and their thinking with penalties and economic sanctions
-Ez 8:16-
And he brought me INTO the inner court of the LORD'S house, and, behold, at the door of the temple of the LORD, between the porch and the altar, were about five and twenty men, with their BACKS toward the temple of the LORD, and their faces toward the east; and they worshipped the sun toward the east.
-Ez 9:3-4-
And the glory of the God of Israel was gone up from the cherub, whereupon he was, to the threshold of the house. And he called to the man clothed with linen, which had the writer's inkhorn by his side;
4 And the LORD said unto him, Go through the midst of the city, through the midst of Jerusalem, and set a MARK upon the foreheads of the men that sigh and that cry for all the ABOMINATIONS that be done in the midst thereof.
-Ez 9:6-
Slay utterly old and young, both maids, and little children, and women: but come not near any man upon whom is the mark; and BEGIN AT MY SANCTUARY.
Rev 9:4-
And it was commanded them that they should not hurt the GRASS (Isaiah 40:7: the people is grass) of the earth, neither any green thing, neither any tree; but ONLY those men which have NOT the seal of God in their foreheads.
Rev 14:1-
And I looked, and, lo, a Lamb stood on the mount Zion, and with him an hundred forty and four thousand, having his Father's name written in their foreheads.
Rev 14:9-12-
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,
10 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:
11 And the smoke of their torment ascendeth up for ever 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.
12 Here is the patience of the saints: here are they that KEEP the commandments of God, and the faith of Jesus.
Rev 13:2-
And the beast which I saw was like unto a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of a lion: and the dragon gave him his power, and his seat, and great authority.
Dan 7:2-7-
Daniel spake and said, I saw in my vision by night, and, behold, the four winds of the heaven strove upon the great sea.
3 And four great beasts came up from the sea, diverse one from another.
4 The first was like a lion, and had eagle's wings: I beheld till the wings thereof were plucked, and it was lifted up from the earth, and made stand upon the feet as a man, and a man's heart was given to it.
5 And behold another beast, a second, like to a bear, and it raised up itself on one side, and it had three ribs in the mouth of it between the teeth of it: and they said thus unto it, Arise, devour much flesh.
6 After this I beheld, and lo another, like a leopard, which had upon the back of it four wings of a fowl; the beast had also four heads; and dominion was given to it.
7 After this I saw in the night visions, and behold a fourth beast, dreadful and terrible, and strong exceedingly; and it had great iron teeth: it devoured and brake in pieces, and stamped the residue with the feet of it: and it was diverse from all the beasts that were before it; and it had ten horns.
(Same beasts, different vantage point in time.)
Dan 7:23-
Thus he said, The fourth beast shall be the fourth KINGDOM upon earth, which shall be diverse from all kingdoms, and shall devour the whole earth, and shall tread it down, and break it in pieces.
Dan 7:25-
And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to CHANGE times and laws: and they shall be given into his hand until a time and times and the dividing of time.
Rev 13:5-7-
And there was given unto him a mouth speaking great things and BLASPHEMIES (Forgiveness of sins in God's place, like the Pharisees accused Jesus of) ; and power was given unto him to continue forty and two months.
6 And he opened his mouth in blasphemy against God, to blaspheme his name, and his tabernacle, and them that dwell in heaven.
7 And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations.
Dan 9:13-14-
As it is written in the law of Moses, all this evil is come upon us: yet made we not our prayer before the LORD our God, that we might turn from our iniquities, and understand thy truth.
14 Therefore hath the LORD watched upon the evil, and brought it upon us: for the LORD our God is righteous in all his works which he doeth: for we obeyed not his voice.
Rev 13:11-12-
And I beheld another beast coming up out of the earth; and he had two horns like a lamb, and he spake as a dragon.
12 And he exerciseth all the power of the first beast before him, and causeth the earth and them which dwell therein to worship the first beast, whose deadly wound was healed.
Rev 13:14-18-
And deceiveth them that dwell on the earth by the means of those miracles which he had power to do in the sight of the beast; saying to them that dwell on the earth, that they should make an image to the beast, which had the wound by a sword, and did live.
15 And he had power to give life unto the image of the beast, that the image of the beast should both speak, and cause that as many as would not worship the image of the beast should be killed.
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.
(Remember the dragon, whom all the beasts receive authority from)
Rev 12:17-
And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.
These are world powers it speaks of. The iron/dreadful beast was Rome, which followed Greece in Alexander's time. Daniel breaks it down pretty well. What one will do to keep from receiving the MARK of the beast in the right hand ( actions) or their forehead (belief system) is to have God's MARK or SEAL there first. It means being so grounded in truth and willingness to follow the Lamb, even unto death, that we are never thwarted in deception, and the deception will closely mimick righteousness. It's totally spiritual but our actions will denote what we really believe and understand..... or not. On the CHIP thing, the world may adopt such as technology increases, especially to keep up with what people think and do. Remember who is prince of the world. That won't change until the very end. Part of it may also be due to those who run the world wanting us to think it's all about a chip, when hundreds and hundreds of verses of scripture tell us what's really up. You may see similarities in many prophecies in order to blind the average bear. Satan always has a close counterfeit of much of Christ's works. The deadly wound of the sea beast will be healed and the earth beast will cause those who don't conform to its ways to be punished. It's sanctions will be progressive. Economic at first, then by force. You basically have to use Daniel as a key to Revelation. The two candlesticks/witnesses are the OT & NT and are translated as "instruction" for us to use together. Hope this helps.
Peace be with you.