In reply to your 5/15 post Unlocking Book of Revelation through Scriptures (fivedoves.com) please consider the following information:
According to the above article, Synchron's brain chip is implanted in the motor cortex of the brain. According to the article at Motor Cortex Function and Location | Simply Psychology the motor cortex is located is situated within the frontal lobe of the brain, next to a large sulcus called the central sulcus, and the frontal lobe is located behind the forehead, at the front of the brain. These lobes are part of the cerebral cortex and is the largest brain structure. Due to the location of the brain chip, it may very well be the mark of the beast which would have to include his name and/or number.
As for your statement " I personally don't think it is possible to enforce such system to have global digital IDs in forehead and right hand through out the earth for at least next 15 - 20 years. So the timelines that we are looking for wouldn't work with this mark. That is not practical too."Neuralink hopes to implant their device in human brains in 2022."
As for receiving a rfid chip in the hand in order to buy or sell, people are already doing that in some countries, such as, Sweden and Great Britain.
British Microchip Implant Takes Hand-Swipe Payments to Next Level, Along with End Times Prophecy Concerns | CBN News
If everyone receives the mark of the beast in the forehead or in the right hand in order to buy or sell that would indicate that they were given something in the forehead or in the hand in order to buy or sell. Otherwise, how will the Antichrist's regime know who is allowed to buy or sell unless they have some type of mark or rfid chip to differentiate who is allowed to buy or sell and who isn't. Humans don't have the capability to read other people's minds to know what they are thinking.