I concur. Blood is diamagnetic, and RFID type devices don't have ferrous metals in them and if they did, they are so small that no kitchen magnet is going to stick to them. I might see my dopey friend this weekend that's vaxxed, if I remember, I'll take my compass with me. I think this is an elaborate anti-vaxxer hoax to scare the sheeples.
Great stuff -- wow! So regular blood repels magnets?
I don't say it's impossible for blood infused with these horrors they're calling vaccinations won't be magnetic, but predict that if so it won't be enuff to measure.
I don't worry too much about mystery chips in vaccines, they'd be too big to go through the needle, but more along the lines of the bastards to adulterate the vaxxes with something like AIDS or m/RNA that scrambles your DNA over time.