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Why do cell phones demagnetize hotel keys?

“The number one issue was cards being demagnetized by being carried next to a cell phone or set on a TV in a hotel room,” Hermanson says. “Anything with an electromagnetic field transmitting from it can cause a mag stripe to demagnetize.”



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Many people believe that storing hotel room keys near electronics, such as cell phones, can demagnetize them. However, this is also a myth. Hotel room keys are typically made of materials that are not easily affected by the electromagnetic fields generated by electronic devices.

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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.

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Experts say you also don't need to worry about turning your key card in at the end of your stay; the information expires so the hotels can reuse the cards.

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The safest way to keep your room key card when you are staying at a hotel is to keep it on your person at all times, such as in your wallet or purse. This will ensure that the key card is not lost or stolen while you are away from your room.

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As long as it's a plastic key card, you should be fine keeping the card as a souvenir. The cards are re-coded after each stay and they are very inexpensive for the hotel to replace. If you're staying somewhere with an actual key, please ask in advance.

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As a rule of thumb, if you don't want this to happen, make sure that you don't place your electronic key card next to your credit cards. Their magnetic strips or chips make them lose their code. If your electronic room key card is demagnetized, be sure that hotel staff asks you for your photo I.D.

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Not a good idea. In most cases, when you get to front desk, they will ask you to bring the key. Most hotels though no longer uses keys but they use key cards (which is controlled by front office), so where you have leave with it or not, when time for check out comes, you will no longer be able to use it.

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What messes up a hotel key? Key cards may become inoperable when the magnetic stripe is demagnetized through exposure to magnets. Name tags, signs, and purse and wallet closures, and mobile phones are all potential sources of magnet exposure.

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Myth two: credit cards demagnetizing hotel key cards Can a HiCo card, such as a credit card, demagnetize a LoCo hotel key card? Both Cunningham and Hermanson say no. Despite what you may hear in the hotel lobby, it is not unsafe to store two cards with their mag stripes facing each other.

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Open the hotel or resort app and sign in to your account. Open your reservation. Tap Add to Apple Wallet. Follow the instructions on the screen to add your hotel room key.

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You can add a hotel room key to the Apple Wallet app. Then, use your iPhone or Apple Watch to view reservation details, check in, and unlock your room. To add a hotel room key on your iPhone, you need: The latest version of iOS or watchOS.

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Additionally, some hotels may require a deposit when checking in which will be refunded upon return of the key card. So while it's unlikely that you'll get charged for simply forgetting to return your key card at check-out time, it's always best to double-check with the hotel before leaving just in case!

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Fortunately, there are several ways to unlock a hotel room without a key card. One of the easiest ways is to simply contact the front desk. When a guest contacts the front desk to request a new key card, the hotel staff will typically ask for identification to verify that the guest is indeed staying in the room.

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Do hotels care if you keep the room key? At most hotels it's not a major problem to not return your room key to the hotel. However, lots of hotels reuse or recycle room key cards so it's always a good practice to leave the key card in your hotel room or to return it to the front desk at the end of your stay.

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No, keeping a hotel room key is not illegal. In fact, it's quite common for guests to keep their keys as souvenirs or reminders of their stay.

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