I was wondering if anyone has prior experience with hall sensors and ardunio boards. I'm trying to make an anti-skimming device that is able to sense the number of magnetic stripe readers within a card payment terminal. If anyone has any reccomendations on how I would go about achieving this, pleas elet me know.
Open the Arduino IDE, click on Library Manager on the left side panel, enter Hall in the search box. Take your pick but I would recommend either A1301 by Rob Tillaart or Hall Switch by Infineon. Install one or both then click the ... menu top right of each library for examples, or from the main menu File Examples then eyeball it.
Here is what the ... menus look like.
That is a very strange and unrealistic requirement. Please try to clearly explain what you really want to do.
I don't see the relationship between the number of mag strip readers and skimming. You can skim with just one.
I want to create a device that is similar to this device: Hunter Cat - Hacker Warehouse
I know it still unclear and doesnt seem realistic, but I want to make a devie that does the same thing as this device except be a lot more cheaper.
Is the objective is to detect an extra skimmer, maliciously placed and somehow disguised, in front of the normal built in one of the card payment terminal ?
Prevalent at convenience stores... for passively stealing credit card information.
That is what I also imagined. Of course the OP must come back and tell us what use (mis-use) cases (s)he wants to handle. I presume in this case the legitimate payment terminal must (somehow) detect bogus additions in the area of its card slot.
From the OP's post #5 above, the device to be mimicked is a commercial item with this minimal (and difficult to believe) description:
The hunter cat will detect the number of magnetic stripe heads inside of a card reader and presents simple user feedback via LEDs – Ok, warning, or dangerous. With this information, the user could proceed or not depending on the alert LEDs.
Sounds bogus to me.
Here's a reader for practicing anti-skimming, that reads chips and stripes... or to sign-in at "work."
From what I've seen, there have been videos and reviews to support the validity of the hunter cat card. As far as personal testing, I have not been able to get my hands on one. But, I believe the card works by detecting the number of magnetic stripe head readers. To be clear, some of the information below I used chatGPT to try and find information about skimmers and how to create some of these anti-skimmers because of how niche the topic of anti-skimming is, so it may or may not be 100% accurate. From what I've read, some skimmers steal card data via a magnetic stripe head reader. Card payment terminals also contain thse magnetic stripe head readers. So, when you insert your card into the payment terminal, the skimmer is able to swipe the data on the card. Again, I believe this is how skimming works, but Im not 100% clear. But all I really need to know is if anyone has experience with hall sensors and skimmers to tell me what the hall sensors can detect to point out skimmers and how I would go about coding this process. I'm sorry for the long response, but I just have little to no idea how I would code or even create this anti-skimmer considering I have little to zero electrical engineering and coding experience.
You won't get much sympathy on this forum.
These skimmers and associated devices can be quite sophisticated :
Fake keyboard to collect pin numbers. An skimmer insert designed for a so-called skimmer proof card slot.
Here (Switzerland) bank cards are now of the chip card type so there is no useful data on the magnetic stripe and the chip cards are anyway (more or less) copy proof. But see this: How to protect funds being stolen from bank cards with a chip and NFC | Kaspersky official blog
... here comes the Stone Soup...
... only that, and nothing more.
Have you considered getting some by doing your own work, rather than begging for copy/paste/profit?
Niche? Nearly every monetary payment transaction on Earth. Niche?