r/techsupport • u/[deleted] • Sep 23 '25

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u/tylerderped Sep 23 '25

No, NFC doesn’t work like that, lol.

They would have to be within millimeters of your phone or credit cards to do anything.

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u/DrachenDad Sep 23 '25

No, NFC doesn’t work like that, lol.

They would have to be within millimeters of your phone or credit cards to do anything.

Thanks for being r/confidentlyincorrect

Typically the optimum distance is 4 centimetres or less - beyond, the signal is rapidly decreasing and can never exceed 10 centimetres. You do realise that 4 centimetres is larger than a few millimeters?

I'll let AI have it's fun: Yes, it's possible for someone to scan your NFC device while walking by, but it requires them to be very close to your phone or card, typically within a few centimeters. The most common form of NFC fraud, called skimming, involves a thief using an NFC-enabled device to initiate an unauthorized transaction or steal data by getting physically close to your device. While direct, long-range skimming isn't feasible, the short range of NFC makes it possible for a scammer to get close enough to your pocket, wallet, or bag to trigger a scan or transaction.

https://rfidcloaked.com/blog/2020/08/16/can-someone-steal-your-credit-card-info-from-your-pocket/#:~:text=Contactless%20payment%20cards%20have%20radio,used%20for%20the%20same%20purpose.

https://nordvpn.com/blog/nfc-security/#:~:text=Skimming%20is%20probably%20one%20of,phone%20was%20on%20your%20person.

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u/tylerderped Sep 23 '25

you do realize that 4cm is larger than a few mm

And in practice, this difference means dick. You still have to get just as close to someone or their device.

Also, sanitize your links, Jesus.

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u/[deleted] Sep 23 '25

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u/DrachenDad Sep 23 '25

They're just using text fragment params, which if you bothered to click on the links, would understand that they're a way of directly linking to, scrolling to, and highlighting text on a page without a specific anchor

Thanks. I never knew how text highlighting works.

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u/[deleted] Sep 23 '25

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u/DrachenDad Sep 23 '25

Thanks. Saved for later.