Vorn Posted July 7, 2013 Share Posted July 7, 2013 My transit tickets have a magnetic strip, and are regularly getting demagnetized. I've eliminated every magnet I can find, but despite my best efforts, I cannot track down the source....so have to assume its coming from outside the house. I'm looking for any cheap/commonly available material to make a ticket holder that will protect my tickets. I'm already aware of the expensive stuff (like metal alloys). Any ideas? Link to comment Share on other sites More sharing options...
EdEarl Posted July 7, 2013 Share Posted July 7, 2013 It will have to be a magnetic material, for example iron. Before aluminum cans there were cans made from iron/steel which would be ideal. However, such cans are rare now. You might try some iron strips embedded in plastic to make a card holder.\ http://www.mansionschools.com/electrode-iron-strip-flat-1561-4-power-physics-electricity.html?channelid=GoogleAdwords&gclid=CJzBrbKonrgCFbTm7AodQxAAaw&captchaChallenge=Yes Link to comment Share on other sites More sharing options...
swansont Posted July 7, 2013 Share Posted July 7, 2013 RF protective sleeves might afford a small amount of help. Link to comment Share on other sites More sharing options...
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