Can you fix a demagnetized card?
Can you fix a demagnetized card? Fix or reorder demagnetized cards? Demagnetized cards are not extremely expensive. However, as a general rule, it's not recommended to fix them. Some people recommend applying a simple life hack, such as putting some tape over the magnetic stripe, but this is no guarantee that the card will work.
Why do hotel key cards demagnetize?
The card becomes demagnetized. This can happen if the card gets too close to a strong magnet, such as an MRI machine. It can also happen if the card spends a moderate or long amount of time next to a weaker magnetic object, such as a cell phone or set of keys.