The microchip in the vaccine breaks down when you apply just a little critical thinking.

People voluntarily wear tracking devices in the forms of cell phones, smart watches, Tiles, etc. Why would they need to secretly inject a tracking device? Clearly, if offered, most people would volunteer themselves to hook up a smart watch to their brain to allow control of their immune system.

Consequently, these smart devices are likely what this non-English-speaker is picking up, as most of these devices broadcast bluetooth signals.