How to Fix a Demagnetized Card

Have you ever experienced the frustration of a demagnetized card? It can be quite inconvenient when your credit card, debit card, or any other magnetic card fails to work properly. However, there are a few possible ways to fix a demagnetized card, depending on the cause and severity of the damage. In this article, we will explore some tips and methods to help you resolve this issue and get your card working again.

How to Fix a Demagnetized Card

When a magnetic card becomes demagnetized, the information stored on the magnetic strip may become unreadable by card readers, leading to transaction failures. Fortunately, there are a few simple methods you can try before considering a replacement. Let’s explore these methods step by step.

Clean the Card of Debris

Sometimes, dirt or dust can interfere with the magnetic strip, causing the card to malfunction. To begin, take a soft cloth or tissue and gently wipe the back of the card. Ensure that you remove any visible debris or smudges that may be obstructing the magnetic strip. This simple cleaning process may resolve the issue and allow the card reader to read the information correctly.

Take a Step Back and Swipe Again

In some cases, the card reader may fail to read the card due to interference from other devices or objects. To overcome this, try moving away from any metal items, magnets, or electronics. Once you have created some distance, swipe the card again at a different angle or speed. Sometimes, a slight adjustment in positioning can make a significant difference in the card’s readability.

Use a Magnet

Although it may seem counterintuitive, using a magnet can sometimes restore the magnetic field of a demagnetized card. Find a strong magnet and rub it gently across the magnetic strip of the card. This action might help realign the magnetic particles within the strip, making it readable once again. However, it is important to note that this method carries some risk and may not work for all types of cards. It is advisable to use this approach as a last resort and exercise caution to avoid further damage to the card.

Put Some Clear Tape on It

A simple hack that can potentially protect the card from further demagnetization involves using clear tape. Take a piece of transparent tape and apply it over the magnetic strip on the back of the card. Be sure to trim off any excess tape to ensure it fits properly. This technique may enhance the card reader’s ability to detect the magnetic strip, increasing the chances of successful transactions.

Replace the Card

If none of the above methods prove effective in fixing the demagnetized card, it may be time to consider contacting your bank or card issuer to request a replacement card. Replacing the card is the safest and most reliable way to resolve the issue. Banks and card issuers are equipped to handle such situations and will guide you through the process of obtaining a new card. Remember to report the demagnetization issue to prevent any potential misuse of your card.


Dealing with a demagnetized card can be frustrating, but there are several methods you can try to fix the problem. Start by cleaning the card of any debris and ensure that the magnetic strip is clear. If that doesn’t work, step back from potential sources of interference and swipe the card again. In some cases, using a magnet or applying clear tape over the magnetic strip may help restore functionality. However, if all else fails, reach out to your bank or card issuer to request a replacement card.

Remember, it’s important to take preventive measures to avoid exposing your card to strong magnets, water, or extreme temperatures, as these factors can lead to demagnetization.


Can a demagnetized card be fixed permanently?

While it is possible to fix a demagnetized card temporarily using the methods mentioned in this article, it is recommended to contact your bank or card issuer for a permanent solution. They will provide you with a replacement card that is in proper working condition.

Can a card demagnetize by being near a smartphone or other electronic devices?

While modern smartphones and electronic devices do emit electromagnetic fields, they are typically not strong enough to demagnetize a card. However, it is advisable to keep your card away from strong magnets, such as those found in speakers or magnetic clasps, as they can cause demagnetization.

Why did my card become demagnetized in the first place?

Cards can become demagnetized due to exposure to strong magnetic fields, such as those generated by magnets, certain electronic devices, or even magnetic closures on bags or wallets. Physical damage to the magnetic strip can also result in demagnetization.

Can I fix a demagnetized card using a hairdryer or microwave?

No, it is not recommended to use a hairdryer or microwave to fix a demagnetized card. These methods can cause irreversible damage to the card, rendering it unusable.

How can I protect my card from demagnetization in the future?

To protect your card from demagnetization, avoid exposing it to strong magnets, keep it away from water or moisture, and store it in a protective wallet or cardholder that shields it from external magnetic fields.

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