After staring at the wall for an hour.... I decided to go and saw a security device in half so I could get an idea of what happens inside the tag an how it works. It seems simple enough, Ball bearings are used to keep the pin in place and when a magnetic force is used to pull out the pin the balls give way.....I think. A bit of research is needed here i think thought. I'm going to try get my hands on a few more, hopefully one with a colour cartridge in it as well to experiment with. Here's a few tags that iv "acquired" so far through the past few weeks.
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