Implants can identify you, to determine your location, and even affect your behavior, introduced under the guise of convenience.
What is convenience? In what can easily be considered as your identification code? But why for such simple actions as reading the code chip implanted in the human body? Can cause the other?
The chips are already being implemented everywhere, people are taught diligently the chip is only good and there is simply no other purpose and is not even technically possible to implement, but the facts suggest otherwise.