system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] How does Magnetos helmet work?

[asking about any marvel univere, movie or 616) 

How does it work? And does it got a max limit? Is there any one strong enought to overcome the helmet, or does it just flatout nosell it? 

Could other versions of telepathy or mindcontroll work? Like, warhammer warp telepahty? How about reaper indoctrination and quantom entangelemt? others?
gpt
In one of the earlier comics, it's mentioned that the helmet contains electronics that disrupt the mental energy required to read minds and totally cut off the signal. Sort of like a psychic Faraday cage.