If a magnet is held close to a credit card...will the card become un-readable to a scanner?

8 Answers

Relevance
  • Anonymous
    1 decade ago
    Favorite Answer

    No. It has to be an AC type of current to degauss the magnetic strip.

    What you can do is put the credit card in a Microwave oven. But for no more than 10 seconds. It will scramble the information

    • Login to reply the answers
  • blea
    Lv 4
    3 years ago

    Mythbusters Magnets

    • Login to reply the answers
  • Dick
    Lv 7
    1 decade ago

    mfiber said it all.

    Mythbusters did do an episode on this very question.

    What they found is that "regular" magnets that folks have in their possession simply do not have a magnet field that is intense enough to affect the data on a credit card, or similar items.

    They experimented with all sorts of "magnetic" items and none affected the cards data, or ability to be read in any way. So don't worry about common magnets affecting credit cards and the like.

    However..... be careful with magnets around CRT type televisions... you can cause problems if you put a magnet real close to the picture tube.

    Hope this helps.

    • Login to reply the answers
  • Anonymous
    1 decade ago

    The link isn't the one I wanted, that is to buy the DVD, but mythbusters had this on an episode. They showed that it had to be a very strong magnet before any corruption happened. Eel skin wallets and refrigerator magnents had no effect.

    • Login to reply the answers
  • How do you think about the answers? You can sign in to vote the answer.
  • 1 decade ago

    lol it can..

    but if you really want the card to be un-readable.. just use a sharp knife and scratch the pins

    good luck

    • Login to reply the answers
  • Did you watch Mythbuster?

    • Login to reply the answers
  • 1 decade ago

    No

    not unless it is a very powerful one.....that you are unlikely to come into contact with...

    • Login to reply the answers
  • Anonymous
    1 decade ago

    If it's strong, yep.

    • Login to reply the answers
Still have questions? Get your answers by asking now.