Closest I could find was a conspiracy theory linking a separate study into using quantum dots to record vaccination. https://stm.sciencemag.org/content/11/523/eaay7162
http://news.mit.edu/2019/storing-vaccine-history-skin-1218
"Funded by the Bill and Melinda Gates Foundation and the Koch Institute "
Thankfully this won't fly in Germany, because the Nazis tattooed concentration camp victims with numbers. Not sure about the U.S. though.
However, for some reason ID2020 is distancing themselves from this quantum dot approach.
https://www.factcheck.org/2020/04/conspiracy-theory-misinter...
"The Gates Foundation has advocated for expanded testing and has funded vaccine research, but neither of those involves implanted microchips."
Technically true. Quantum dots aren't exactly microchips.