r/NFC

There's a project I attempted just for fun that isn't working. I'm hoping it's feasible but it might not be. So I play lasertag with a system where you can choose a custom code name. They print you off a plastic card with some form of RFID in it. You swipe the card across the pack and it turns on. Your code name stores your stats and achievements.

What I'd like to do is import the card info to my S25 and then have it emulate the card. Then I could just swipe my phone across the pack instead of the card. It's not really more convenient then the card. I just wanted to see if it's possible.

According to my searching an old version of Samsung wallet would let you program generic RFIDs like gym memberships or electronic deadbolt fobs into it. Now it requires you to choose from participating programs. So I started looking in to other apps. I've found apps that can scan the card but when I try to import the data it errors out saying something is missing.

What info from the scan should I share to help you all give me an answer?

Hola, seré breve. Hace unas semanas me comenzaron a aparecer varios videos de jóvenes que venden tarjetas, pegatinas y letreros personalizados con NFC o códigos QR.

Actualmente trabajo por las mañanas y me gustaría generar algunos ingresos extra, así que pensé que podría ser una buena idea comenzar con este tipo de productos.

¿Alguien sabe dónde puedo conseguir estas pegatinas o tarjetas en México? También agradecería mucho si conocen algún proveedor o página que haga envíos a México sin que los costos de importación sean tan elevados. 😅

¡Gracias y buenas noches!

I am designing a game in which users will need to rearrange physical items in slots on a tray. If they get the items in the right order, they pass the level and gain a point. I'm trying to figure out how to build the puzzle so that users can manipulate physical objects, but the result would be checked digitally and the points awarded on their phone. I was hoping to put something on the bottoms of the items and the tops of each of the slots, perhaps NFC tags, but my fiancé isn't sure that they will work. Is there a better way of digitally tracking an item's physical placement?

Thanks in advance!

I forgot my debit card at home, and I’m in Bologna now. I ran in to the first problem where I had to pay deposit to my hotel but they didnt accept my local debit card (im from the netherlands) which is a visa card so it should work throughout europe. i went to a couple atm‘s but none had a nfc option so i can withdraw money using my phone. luckily i remembered i have a digital credit card so I ended up using that one to pay the deposit, but experiencing this, I would feel MUCH better if i had some cash on me… So my question is, are there any atm’s in Bologna where i can withdraw using nfc option with my phone

Thanks in advance!

I am having problem with Apple Pay/NFC early this year after iOS upgrade to 26.3. Then it stopped working totally after upgrading to iOS 26.4. Did an upgrade to 26.5 and still not working. Tried all the methods and nothing can solve the issue. I have an iPhone 15 pro max and there is an NFC option under setup/general below the Car Play Option. Such an option does not exist on any of other iPhone like 16 pro max at all. I ran the hardware diagnostic. The mobile inspector detected a faulty NFC hardware. Since then all the NFC related function stopped working. At the same time the iPhone response is very slow every time when I touch the screen to wake up the iphone.

Last night I did a painful upgrade to 26.6. I have to connect the iPhone to a computer since the OTA upgrade stopped working since 26.4. After that I found the NFC option turned into green. Then I ran the mobile inspector and it returns the result that everything including the apple pay are working properly. Then I reinstalled the credit card into the wallet which I could not when there was a NFC issue. I also ran the automation under the shortcut for NFC scan, it can properly detect the credit card. I have yet to test the apple pay on the real terminal.

It seems that NFC issue is really a software issue and the iOS 26.6 did resolve it on my iPhone 15 pro max.

Does anyone knows where can I find a cheap vendor of NFC Google review cards? Im from Barcelona and i want to start to sell them. Thanks.

So I’m organizing my camping gear and want to put tags in totes with lists of what goes in and how to pack them so everything will fit.

Using canva because you can create a public link to the document/flyer/whatever.

I put the link In and encode the tag, but to takes me to a canva 404 page.

It’s https:// and I’ve matched it, even tried using http:// for shits and giggles.

When I put the link into my browser it DOES work, so I know it’s the tag.

This is my first time encoding, only used hotel keycards for shortcuts on my phone before now.

What is it that I don’t know?

I want to host a game/activity at my university as an extracurricular activity, while also using it as an IoT project. IoT isn't part of my Computer Science curriculum, so I only have a basic understanding of it.

1. NFC Registration

I want to pass around an A4 sheet with the event information. Students can tap their phones on it to check whether their phone supports NFC. Tapping it would open a message saying that they're eligible for the game.

Questions:

- Can I connect the NFC scan to a backend/database?

- Can I store information about which students scanned it?

- Can I track the students who registered through the NFC scan?

2. NFC Game

I want to stick NFC tags behind printed cutouts, such as movie characters, landmarks, or other images.

For example, a student could tap a picture and get an MCQ such as: Which is the longest river?

Questions:

- Can each NFC tag open a different question or webpage?

- Can the webpage display colours, animations, GIFs, or videos?

- Can I make different things happen depending on whether the answer is correct or wrong?

- For example, a wrong answer could lead to a Rickroll, while a correct answer could show a YIPPEE meme.

3. Database / Backend

Can I keep track of each student's answers in a database and record whether they were correct or wrong?

Can I calculate their score or create a leaderboard from this data?

4. Hardware Limitations

I can't buy an Arduino, ESP32, Raspberry Pi, or other additional hardware.

I can use my friend's iPhone to write the NFC tags and my laptop for the backend/database.

Main question: Can I build the entire setup using NFC tags + smartphones + my laptop, without needing an Arduino or other dedicated IoT hardware.

I understand calling this an IoT project is larping when I'm only using an NFC tag. Time is limited and I am from the worst tier university possible. I just want to stand out from my group for doing an Out of syllabus project + have extra curriculars.

Thank you for answering my questions!

I was wanting to turn to my computer into something like a flipper zero. How would I go about that?

Hi guys.

I wanna copy my hotell card to my phone. So I don't have to walk around with the card. And so I can give the card to my partner. Cause the hotel just gave us 1 card.

Is there a way? I have a Google pixel 6a.

Been going to more networking events through work lately and everyone around me seems to have a different digital card setup. Some tap phones, some have QR codes, some have little card things. No idea how they actually compare or if some are just way more popular for a reason.
Do the contacts actually make it somewhere useful or do you just collect a bunch of random scans that go nowhere? Curious what people are actually using and what made you pick it.

I am looking for a printer to print images and text onto NFC enabled PVC cards.

I know retransfer is better than direct to card but I can't afford one of them.

I've found a used Evolis Primacy 2 in budget, would this be ok for printing onto NFC cards?

Does anyone have any other suggestions, I'm looking for high image quality for NFC Cards and only require a low output volume.

I've had a credit card style programming card for an electricity meter for years.

I use it very infrequent.

When I tried to use it last the meter displayed an error.

I got a replacement and it worked so the unit is not the problem

Trying to buy an NFC business card for college events but do not want a subscription model. Found this website: connex.cards Has anyone heard of them/ had bad experiences before I buy?

How could I read specific blocks without having the keys or do I have to do the nested search to find them all?

Hello, I’m looking for a way to unlock Vigik access systems using my Flipper Zero. I’ve already tried MFKey32. I won’t have access to the original card database, only to the badge reader. I’d like to know what the best attack method would be to unlock the Vigik system and gain access through the door it controls. I’m still new to this and would like to learn more.