|This article has a real world counterpart outside of Left Behind.|
|This subject has a counterpart in the real world. However, information in this article comes from the fictional universe of the Left Behind franchise.|
The biochip was a small microchip that could be inserted into a person's body through a syringe-like injector, either in his right hand or in his forehead. The biochip contains all relevant information about the person, including his occupation. It allowed for cashless purchases of all items through the use of eye-level scanners. The biochip was part of the "mark of loyalty" system that the Global Community had enforced on the populace following Nicolae Carpathia's resurrection in "The Mark".
The system now has a real-world counterpart in a system developed by Kevin Warwick. In addition to offering a way to quickly retrieve medical information in an emergency, it also allows for controlling prostheses and robotic elements within the immediate environment. An implantable NFC tag system was released to the public in 2013.