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To test this, we move a magnet near the credit card at various distances.In the video below, we controlled this magnet-to-card distance by stacking some paper of known thickness on top of the card. While thinner magnet shapes exhibit weaker magnetic fields, the magnetic fields are usually stronger out at the edges.As an added precaution we always recommend layering any cards with magnetic strips away from the magnet with the magnetic strip facing out, preventing exposure and any embarrassment when cards won’t swipe. Why would a magnet demagnetize a hotel key and not a credit card?
A small amount of data is stored on the strip, including the cardholder's name, account number, expiration date, etc.
In fact, the inexpensive card readers now available look just like another keyboard to your PC.
Plug it into a USB port and swipe a card, and the computer sees the output just as if you were typing the data in.
The further away your card is from the magnet, the safer.
With a money clip, magnets enclose the cards and cash on both sides, making it hard to provide a protective layer. We have a best of both worlds solution – our money clip wallet.
Bank cards, employee cards, library cards tend to be constructed with a high-coversity magnetic strip – a stronger and more durable option for long-term use.