You can stick 100 chips in your body but it's no different than someone putting any other objects in their own body
Depends on the context. The Mark prophecy isn't just about "sticking chips in the body". It's about demonstrating loyalty. People who depend on the Beast for their daily bread will show their loyalty by taking the Mark so that they may continue buying and selling.
People who trust God for their daily bread will refuse the Mark, even though it will mean a harder life for them in a world which is controlled via a monetary system which has very little sympathy for the poor. The 3 key criteria used when describing the Mark is that it will be global (i.e. rich/poor, free/slave, small/great), that it will be on/in the right hand or forehead, and that it will be used to control buying and selling (i.e. if you don't take it, you can't buy/sell).
When trying to formulate a theory about what the Mark of the Beast may be, we should keep those criteria firmly in mind.
such as an artificial heart, a pacemaking, metal screws and plates, a needle.
None of which matches the criteria.
I've mentioned it to you before, it's a person's allegiance and belief of who they wish to follow as their god.
And on this we agree, but the essence of concepts like "allegiance" and "belief" can only be recognized through behavior, or as James said, we only know Abraham had faith because he acted on that faith. A decision to either take, or reject a "mark" on the hand so that one may continue to buy/sell is a choice which will reflect allegiance; the Beasts' system of fear and worry for food and clothing, or God's system of seeking his Kingdom first?
Remember when Jesus talked about serving two masters? He said God is one master, and the other is mammon (money and the things money can buy). And Paul did not say that Satan is the root of all evil, but rather the love of money.
Not much effort is made in the Christian world to identify practical guidelines about what it means to love money, or to have serious, open, honest dialog among members about whether or not they think there is any money-loving happening in their church. It's largely ignored.
And this is what the Mark represents; God's final effort to get through to the human race regarding our dependence on materialism for our daily bread. The prophecy is nearly 2000 years old and yet it accurately predicts what's happening in world banking right now; tap-and-pay technology.
If you choose to follow allah over Yahweh and accept a mark that indicates your faith, that is your mark of the beast.
Where do the 3 main criteria fit in? Sure, Islam is a huge religion, but it doesn't reasonably account for "all rich/poor, free/slave, small/great".
I guess Islam has its various symbolism like any other group in the world, so you could speculate that it may eventually require its adherents to wear a special arm band or maybe a patch of some kind which you could then point to as a "mark" on the hand, but then how do you account for buying/selling?
Only Islamist will be able to buy or sell? And how could an arm patch regulate buying and selling? It does seem like Islam will have some part to play in the end time, but it being responsible for the Mark just doesn't make practical sense.