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Message: <blockquote data-quote="ibnanv" data-source="post: 24354757" data-attributes="member: 218596"><img src="https://cdn.instructables.com/FK6/7PZD/HZ3YAA3U/FK67PZDHZ3YAA3U.LARGE.jpg?auto=webp&crop=3:2" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Contactless payment is a relatively new  feature in debit cards that allows you to make payments for small  purchases quickly and wirelessly over a short distance without having to  enter your pin.When my old debit card expired and a new one was  sent, it came with this new feature. I wanted a way to disable it since  each time I was scanning my RFID access card in my wallet, the detectors  at work were picking up the debit card too. They'd beep twice and  sometimes get confused. Not only this, but while my bank promises it's  secure, I'd rather not have a feature I don't intend to use on the  off-chance that it's not. Existing articles I found when looking  for a way to disable it guess at the location or infer it by cutting  apart other contactless bank cards. Since I have access to a micro-CT scanner at the University of Huddersfield Centre for Precision Technologies,  I thought I'd put my card in the machine, take a 2d xray still and  allow myself to find the quickest and easiest way to disable it.The  above image is a a screen grab from the Xray preview of a Nikon  micro-CT scanner. The low resolution is due to it being a live view  image. When in operation the micro-CT scanner is capable of a resolution  of several microns.Step 1: How Contactless Payment WorksContactless  payment works using RFID technology. A chip inside the card is powered  when the card comes into close proximity to an RFID card reader. The  signal emitted from the reader powers the chip though use of the  embedded antenna. If this antenna is cut there will be no power to the  chip and so when the card is held close to a reader the debit card won't  reply.By making cuts in the card where we know the antenna is, we can disable the wireless payment features. Step 2: How to Disable It on Your Card                                <img src="https://cdn.instructables.com/F6F/1GER/HZ3YACS2/F6F1GERHZ3YACS2.LARGE.jpg?auto=webp&crop=3:2" alt="" class="fr-fic fr-dii fr-draggable " style="" />  Make a cut 5 mm deep anywhere  around the debit card or snip off a corner. This will break the antenna  path and stop power to the chip when held near a reader. That's it. Easy![YOUTUBE]c9vTvbHgi2M[/YOUTUBE]<a href="https://www.instructables.com/id/Disabling-Contacless-Payment-on-Debit-Cards/" target="_blank">https://www.instructables.com/id/Disabling-Contacless-Payment-on-Debit-Cards/</a></blockquote>

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