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Why do hotel key cards demagnetize so easily?

Why do hotel key cards demagnetize so easily? - Physics Forum

Why do hotel key cards demagnetize so easily? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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Old 06-27-2009, 02:23 AM
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Default Why do hotel key cards demagnetize so easily?



I work the front desk at a hotel and have to re-key peoples key cards about 10 times a night. I'm just curious as to why they demagnetize so easily. I know that if they rub up against a cell phone this causes it to happen, but can you give me a scientific explanation as to why? Also, what else can do it?
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Old 09-06-2012, 09:47 AM
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Default Re: Why do hotel key cards demagnetize so easily?

Nikki Beach in Miami is the hidden jewel of South Beach, located at One Ocean Drive along the beautiful Atlantic Ocean amid swaying palms trees and warm sunny breezes. Nikki Beach Miami has established itself as the landmark nightclub and venue for ultimate private parties, large celebrations, and always lives up to its reputation as a South Beach Miami party playground for jet setters, celebrities, VIPs, guests and visitors alike.
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Old 09-23-2012, 11:32 AM
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Default Re: Why do hotel key cards demagnetize so easily?

Cards need to be maintained properly. Placing the cards on electronic home products, such as refrigerator, results in demagnetizing the card easily.
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