https://www.bring4th.org/forums/showthread.php?tid=18793&pid=299564#pid299564

Joe) Are the videos of magnets sticking to vaccinated people's arms real?
A: Some. Some places and selected batches of vaccine.
Q: (Joe) So what are these magnets being attracted to?
A: Will be used at later time.
Q: (L) Creepy! Used for what?? [laughter]
A: Directed beam applications.
Q: (L) Well that's creepy, too. Do any of those directed beam applications involve the zombie apocalypse?
A: Close
Q: (L) Ooo, creepy! [laughter]
(Joe) Is that what they were referring to in a previous session when they said some vaccines would be used to control people?
A: Yes
Q: (Andromeda) And what percentage of these vaccine batches have this technology?
(Joe) Or how many people?
(Andromeda) Yeah, how many people?
A: 12 percent.
Q: (Joe) That's a LOT of people.
(Niall) They're all Pfizer recipients I guess.
(L) That's a lot of people, but it's still small enough number of people that they can say that it's...
(Gaby) It's mostly in North America?
A: Yes
Q: (L) Because Gaby has been testing her patients, and none of them have shown any evidence of being magnetic.
(Joe) She was doing it surreptitiously.
(Artemis) Yeah, she was like, "Hey, how are you feeling? Does this stick to you??" [laughter]
(L) Can I put a refrigerator magnet on your arm there? [laughter] Alright, next question.
Q: (Joe) Would it be true to say that the main goal of governments in doing this and perpetuating the pandemic is simply to control people, to herd people to a finer order of control?
A: Yes
...
https://cassiopaea.org/forum/threads/session-29-may-2021.50565/

I've some report from people i know, real people in real life. The magnet thing is very real (and very surprising) for some who got the jab.
I know what is shown on internet isn't a hoax.
We seriously think (or know) there are ferrofluids in these shot. And guess what, ferrofluids can be controlled by electromagnetic waves.

https://www.youtube.com/watch?v=6ngOvMmexhQ