The technology you see in this video is similar to what makes industrial lifting magnets work. Without the need for electricity, it is possible to turn off a permanent magnet by playing with the interaction between magnetic fields.Thanks to [ŝ source http://hub.page/lifestyle/2-diy-magnetic-switches-how-to-turn-off-a-magnet-magnetic-games sourcehttps://hubpage1.tumblr.com/post/674736323695919104