Yes what she is saying is real for a good part but it is not malicious if not weponized. On the other side the idea that they can create self assembly structures able to communicate via Bluetooth is not impossible but is not openly admitted. The tech is there and many people took some time to explore this possibility. I checked the MAC of people out of curiosity and incredibly I cannot dismiss this. It is totally possible they wanted to mark every single person with a biological implanted device in order to train AI over the behavior of people to predict their future actions. Technically not impossible with today tech. The question remains... is someone really so psychopath to desire to control the world and all the people?