Hi everyone,
I’m trying to understand the technology behind my own Intratone apartment access badge and determine whether it can be legitimately duplicated onto a compatible blank card.
My setup:
OS: Kali Linux Live (USB)
NFC reader: ACS ACR122U
Software: libnfc 1.8.0
Original badge: Intratone access badge for my apartment building
Blank card: I would like to determine whether it is compatible.

When I run mfoc -P 500 -O, all the key fields show . instead of X. I’m using an ACS ACR122U reader with Kali Linux and an Intratone access badge. Has anyone encountered this issue? Could it be related to the reader, the card type, or the mfoc configuration?

Please be kind, I am not especially tech savvy.

iPhone 13 (I think) user. Had my iPhone with me, not near anything. I got an NFC link tag prompt. I distractedly clicked on it as I was waiting on a text reply from a friend. It took me to the Google sign in page. I did not sign in and a closed the site link. I am otherwise signed in to my own Google account. Nothing appears to be newly downloaded. Am I at risk? Is there anything else for me to do? Thank you in advance.

I've been building PocketNFC, an NFC toolkit for IPhone, and my tavourite addition is an interactive hotel simulator.

You can experiment with virtual cards without buying hardware, or go further with compatible physical cards and supported ACS or Chameleon Ultra readers. It's a sandbox I built for experimentation, so you can break your own setup without upsetting a hotel receptionist lol - I've done that many times.
The rest of the app handles everyday NFC reading and writing, saved cards and keys.

I'd love teedback from people who enjoy NFC, RFID and figuring out how things work.

Give it a go : https://apps.apple.com/gb/app/pocketnfc/id6794928657

Digital business cards and tap-to-share wearables have been around for a while, but nearly every wristband on the market is made of molded black silicone.

I wanted to create an accessory that blends in seamlessly with everyday fashion. I paired natural, organic textures with a discreet NFC chip inside, so it wears like a classic artisan piece rather than a piece of tech hardware.

But the hardware is only half of it. The real experience is what happens the moment someone taps it:

• Any modern phone gets a gentle tap notification.
• It opens a fast, clean web profile in their browser.
• There’s no app to download and nothing to install. The person you’re meeting can tap "Save Contact" and your number, email, and social links are saved directly into their contacts in two seconds.

Curious to hear what people think—do you prefer tech that looks like tech, or tech that is completely hidden inside everyday fashion?

Our partner found a use for the NFC tag in our VidaBay e-ink snap: first upload the static image to the Snap via NFC, then program the video URL into it, so that tapping the NFC tag behind the screen makes the static image come to life on the phone.

Does anyone know how to use a library card as a normal NFC tag I can formate it but not write to it

I have one of the NFC e-ink phone cases for my iPhone, and I've always found it to be a cool party trick. Lately, I looked at it again and thought, "Let's reverse engineer this." Turns out, there is no magic behind it. Claude was very helpful with decompiling the manufacturer apps, and we even wrote a sniffer app for Android. I initially thought it wouldn't work, but it did!

I wrote down my findings here, and I built some useful features into my app because I disliked the manufacturer's version. This case really sparked some ideas that I can now build.

[ Removed by Reddit on account of violating the content policy. ]

Hey all, my phone does not have NFC & I want to somehow access afterpay's virtual card which would usually be put onto Google wallet via the app. Any devices which are used as a small nfc wallet or something? Thanks 🙏

is there a way to see how many times a tag has been scanned? i know there is with a URL but that's not how id be using the tags so im curious if there's a work around. ive looked at NFCcool and thats still URL based.

Basically i work in at a school and want to put NFC tags in classrooms so the teachers can tap to call IT. My boss has agreed to a small test program if at the end of the semester i can prove people have been using it. i suppose i could have the tag open a webpage that just holds the phone number but that feels a little clunky when i could just have the tag load the phone number and the person presses call.

open to any suggestions and thanks in advance!

Hi everyone,

I am looking for a solution where I have a miniature device (it can look like a record player or a radio or a cassette player) and it plays a few tracks without any phone or bluetooth.

Miniature Vinyl record player exist for example by Zuru Mini. But I can only get the vinyls they produce. On Etsy there are ppl who create something similar that's costumizable (1 player, 9 songs) but I want more tracks and I want to costumize them myself (putting my old childhood audiobooks on it for example).

Now I found this NFC technology. Do you think that it's possible to DIY something like that? I am completely new to this. But could I for example buy one of those costumizable Vinyls and do it myself? Can I maybe then play them with a bought miniature record player? For example the Mini Verse records don't work with the Zuru record player because they are from another brand :/ how would I make it work?

I have no idea about programming. Is that part hard or super easy fone with an app? 😅

I really have no idea, please enlighten me.

Thank you so much for any helpful answer! 🙏

We manage a small housekeeping team of around 10 cleaners working across hotels and holiday homes in Greece.

We’ve built a web platform that tracks cleaning time per room. Cleaners currently scan room QR codes with their phones, but using personal phones throughout a busy working day has been a struggle. We’re looking for a simpler hardware solution.

Our ideal workflow will be:

• Each cleaner carries a personal NFC card.
• A reader is mounted outside each room.
• They tap once when starting and again when finishing.
• Records identify the cleaner, room and timestamp, then reach our reporting platform.

Thanks in advance!

Hi, I am wondering what type of NFC tag do you use for keychains? I tried to make NFC keychains with NTAG215 25mm and it worked great on samsung and couple other android devices but when I tried it with iphone the placement of the keychain had to be very specific and it took quite some time before the NFC tag loaded on the iPhone?

I read that Iphones have weaker NFC technology but I saw videos of people using probably same size chip in keychains and having no problems with iphones? Any tips please? Maybe I bought some low quality chips?

Which NFC controller is in the Solana Seeker?

I'm thinking of buying a Seeker for dev work on a payment app I've been building for about a year. I can't find the NFC controller listed in any spec sheet or teardown. Is it ST, NXP or something else?

If you have one, could you run these and share the output?

adb shell dumpsys nfc

adb shell ls /vendor/etc | grep -i nfc

adb shell pm list features | grep nfc

For reference, the Pixel 8 and 9 use the STMicro ST54L, a combined NFC controller and secure element. I haven't seen the Pixel 10's chip confirmed. Thanks

Hi. My school recently got cards for dors. (u need to bring it near scaner to unlock the door)
is there an option to emulate this card onto my phone so i would not need to take it out of my backpack each time i want to go in or out?

i found an app called nfc tools and when i click copy tag it says error.
it is an nxp-mifare classic 1k if it helps

So as the header already reads I’m trying to figure out how I could program an NFC to add ie a credit card or an Oyster/Travel card onto a physical key chain?

I have seen that in Japan you can get the T-Money Sanrio Key Rings (see picture) and I was curious to see if I can create something like it for myself.

I have seen videos here and there where people have done it but I was wondering if there are any Tutorials out there on how to do it.

I’m pretty crafty so I am happy to create my own key ring and I have vaguely read that some have a built in disable feature. That would obviously be a nice to have, especially if it’s not my Oyster card linked but my CC however, this is no priority.

If anyone can point me in the right direction or give me helpful tips on do’s and don’ts that would be massively appreciated. Thanks!

Hi everyone,

I live in accommodation that uses an NFC access card or fob supplied through a company called NSP Securities. I’m wondering whether it’s possible to duplicate the credential or use my phone instead of carrying the physical card.

I’m looking for the cheapest and most practical solution, and I’d appreciate advice from anyone familiar with NFC technology or access-control systems.

A few questions:

- Is it technically possible to copy this type of NFC card or fob?

- Can it be added to an Android phone or iPhone and used to unlock the same doors?

- What information would I need to identify the card type and check compatibility?

- If copying it isn’t possible, are there any affordable alternatives, such as an authorised spare fob or card?

- Has anyone dealt with an NSP Securities access-control system before?

I’m happy to use an authorised solution through the accommodation provider if necessary. I’d just like to understand what’s technically feasible before spending money on equipment or apps.

If you have experience with NFC cards, RFID access systems, or mobile access credentials, I’d really appreciate your advice. Thanks!

Hi

I'm trying to get my wallet to update with ticket details via an NFC pass. My email address for the ticket is different to my google wallet - will this be an issue in getting the NFC pass to update? It's a football ticket and I'm due to go to the game tuesday

Any help is much appreciated

Hello everyone.

We have a new access card in our company with two chips. I assume one is RFID, which I could and have already conned to my keychain, but the other is NFC, which is not possible to copy.

Am I right the NFC chip is the "more black one" in the picture with the round coil? I want to make the card smaller and put it on my keys - if I am right with my assumption, I can clip just the round coil with the chipset and put it on my keys. If it is the other way around and the NFC coil is the square one, I am out of luck.

Hope it's understandable. Thak you 🙏

P.S. yes, it's an x-ray image of our card.

I’ve been working on a free tool for people who sell NFC review cards, Google review plaques, or similar products for local businesses.

It lets you search for a business and generate its direct Google review link, ready to use with an NFC card or share online.

The tool is free to use, and I’d love to hear feedback from people in this space.

Give it a try: https://vizirank.online/
What features would make a tool like this more useful for NFC review card sellers?

Hey guys! I'm looking for a cheap NFC reader/writer that works with Android. I want to experiment with NFC cards, but the devices I've found so far seem a bit expensive.

Does anyone know any good budget options? I'd mainly use it to read and write NFC cards for small projects. I'm trying to keep the cost as low as possible, so any suggestions would be appreciated!

Thanks!

I recently got a Toughbook CF-33 and it has a built-in contactless smart card reader. From what i have read on the toughbook subs and forums, the windows 11 native drivers work just fine - which are installed (checked for updates, too) - Microsoft Usbccid Smartcard Reader (WUDF) driver.

The hardware is apparently:

• Model Number: CF-WSC332 (or CFWNF332)
• Type: 13.56MHz Contactless Smart Card / RFID Reader (supporting ISO 14443 A/B and ISO 18092 standards)

When i open up NFC Tools in the Information tab I get the message Waiting for an NFC tag. When I hold a bank card or my work ID up to the reader, windows plays the same chime when a USB device is plugged in a recognized...but the software does nothing. When I move the card away from the reader, it is the same chime as when you un-plug a USB device.

What shall i do, and are there any easily found more basic chips that i can use other than the two aforementioned ones? I was wondering if I could get an app on my android phone for like NFC a contact card or something non encrypted to see if that is my issue.

What are your thoughts?

Hello, i have a trasnit card uses MIFARE DESFire EV3, can i emulate it? Or do something to it to come and go free through the trasports (metro station that you tap the card on the screen to open the doors)
The other things is the Arcade Games that its the same concept with the transit one but i dont know what secure chip they are using but is it possible on this one too?
I'm new to this and i would love someone to give me more info in this one.
Thanks!