Hi all, I never done anything around NFC but I would really love to simplify a task at work. We got a new system which for some reason requires you to scan 3 barcodes. 1st is to say you're clocking in, then your own badge barcode and last to confirm you have to scan "yes". We get huge queues when clocking out so I was wondering if it's possible to make an NFC tag to load those 3 lines (We can't make any changes to the original clock in programm since it's mandated from the parent company). Any help would be welcome!

I'm looking at using NFC stickers so customers can prove authenticity of some paintings and drawings I'm selling. The stickers would be stuck on the back of the canvas/paper so can't be too bulky.

I understand it's possible to fake UIDs with some tags, so I'm looking at those that have additional protection such as NXP's chips with programmable Originality Signatures and tamperproof features.

It seems that a simple scan with an iPhone only reads the URL from the tag, and doesn't natively display UID, signatures, etc. That's fine, as customers could install NXP's tag scanner app, or similar.

I'm skipping the NTAG range as the memory retention of 5 years isn't long enough; the more recent chips have 50 years. I think I'm leaning towards SLIX2 (https://www.nxp.com/docs/en/data-sheet/SL2S2602.pdf) or maybe the ICODE3 TagTamper (https://www.nxp.com/docs/en/data-sheet/SL2S3003\_SL2S3003TT.pdf).

As well as not being decided on the chip, I'm unsure what package types to buy, and also how to buy them in sticker format (do I need to make my own?).

Cost doesn't particularly matter (within reason) as I'll pass this cost onto the customer.

Finally, it's important that the tags can be interacted with from iPhone/Android.

Any help would be greatly appreciated! Thanks!

Trying to follow this tutorial: https://medium.com/@androidcrypto/demystify-the-secure-dynamic-message-with-ntag-424-dna-nfc-tags-android-java-part-2-1f8878faa928

but I don't understand how the tags are being setup. What tools are being used to, for example, write a capability container to file 1. Can I do this with an ios device?

I was looking to clone this tag, but when I read it through MCT and saved the dump, I saw some dashes instead of the usual 12 Fs. Not all sectors have these, but most of them do. Will this affect the cloning, or does it just not matter?

Is there such a device, instead of manually switching when I need to open the door?

With smartphone integration and NFC card a modern digital car key can do a lot. Which functions are necessary to you? And Do you still want to have a physical key fob?

Please fill out this short survey: https://www.menti.com/alz4xeph9csa

It's anonymous and takes only two minutes.

Thank you very much!

Hi everyone. Is it possible to use the ACR122U to open up a link in browser on the computer it's attached to?

I'm completely new to this but I was wondering if it was possible to change the credit value on this gym card, any tips?

Actually, a similar project did already exist, but it wasn't working (https://github.com/underwindfall/NFCAndroid/issues/11).

If you want to check it out and give me some feedback, there it is: https://github.com/albertoZurini/NFC-Demo

Do you think I can use something else other than IsoDep to transfer this message?

Their website states:

Please ensure that the balance of your account is spent or withdrawn before the expiry of 31st October 2024, as you will be unable to spend it using your ring after that date."

Can't find a way to withdraw funds.

Anyone have a solution?

I have an NFC card that I can read everything from it, it has no encryption. I use it to unlock my cabinet door. How can I copy it to my phone? So I can just pull up my phone and select the card and tap and It unlocks.

Would anyone know if there is there a way to copy and paste a dynamic QR code from a NFC pass that’s on google wallet and then paste that dynamic QR code onto wherever I want.

Issue I have is I cannot give a screenshot of the QR code because it rotates and will scan red not allowing the other person entry.

Hey everyone, I am trying to find a way to make/get shot glasses with nfc chips in them for my friends bachelor party, so we can have have shot glasses with amiibo in them, does anyone have any suggestions on how might be the best way to acquire/make these?

Hi all,

I have a Mifare 1k fob with a 7 byte UID that I would like to clone.

I am able to see the whole contents of the fob in MCT after it found the keys, including the UID etc.

Firstly, where would I find a 1k 7 byte magic card, as the ones that seem to be showing up as 4kb, so I assume you can't use those?

Also, if I bought a ACR122U, what software etc would I use with a Windows PC and what commands would I run to clone, please?

I understand that Gen3 cards need a special command, unlike Gen2 Mifare cards, which can be cloned using MCT.

Bit of a newbie to this subject, but I have quite a bit of knowledge, but here is where my knowledge sorta stops. Sorry if they're silly questions.😂

Hi everyone, I'm trying to figure out how to make a bunch of Skylanders of my own using some NFC keyfobs (not cards because they take up too much room on the portal). I'm following this video guide by Skylandeer;

https://www.youtube.com/watch?v=6GGM4oMyJdI&t=2s

Hi i saw people using their ucla student id to tap directly on phone and show their social media info. I know that you can buy a bulk of the nfc stickers/ tags on amazon but I was wondering if there are common cards that I already own that have an nfc tag like a ucla student id?

I saw that cards with 3 curved lines means they have an nfc tag. I checked that my credit cards, clippers card, and even venmo debit card had them but when I try it to write it shows 'error'. Any thoughts on a card that I may own that I can use for this purpose?

Hello. I live in an area where monthly bus passes can be bought on and app and downloaded onto an NFC card.

This card is for me apparently very very easy to lose. I was wondering if I could use an NFC read/writing device for read the card and copy it onto one (or several) copies so I don't lose £75 every time I lose a newly topped up card.

The worry I have is if I spoof the card I still need to to tap the card against my app to upload the new card. Would that be possible using a copied card? Here is that app showing the syncing of the data.

Massive beginner so treat me with kid gloves please :)

Hello, I saw this article that explain how to spoof a gym's RFID key card. I would like to do the same with my gym, I thought it would be the same tech since the cards look almost identical. Here's a link to the article.

The issue is that MIFARE Ultralight, my gym uses ICODE SLIX. I was able to read the info using NFT tools but 1. couldn't find "mifare ultralight tool" and 2. probably won't work since it's not the same card.

So now I'm kinda confused.

1. Is this even doable?

2. How is it doable?

3. Are these cards encrypted?

I would like to try to spoof using my phone directly. I have an old Pixel3 that I can root and play around with and check if this is doable first. And also, I'm curios to know if I can duplicate the card so I can have multiple of it ?

I'm so so gutted with the closure of mclear and I'm trying to find a alternative what would you all recommend for a UK user

Soooo, I have the following problem: my workplace wants me to change RFID/NFC readers at my workplace. It worked perfectly until new workers came and got brand new different cards. Now my problem is, I don’t f know what technology the new cards have. And I have absolutely no opportunity to ask someone about it. My part is to find out. Try and error. “One reader will work for sure, just buy a few and try them out”. So about everything: there is an arduino (before it was Mega 2560) UNO. I’ve tried 3-4 different readers out, but not even a reaction with the new cards. I’ve managed to fing out that with a “NFC.cool” app my phone (iPhone 13 Pro Max) is able to read both cards. Not like giving me any info about it but at least some of a reaction. My latest reader is the Whadda WPSH211. It was the reason why I bought the Arduino UNO in the first place, for the compatibility. But none of a reaction, somehow not even from the older cards. Is it really about the reader or could maybe my code be the problem? I talked to my boss about it and he said I need to work on my code, but I´ve tried some codes from Arduino forum and they didn´t work eiter (at least it´s not me I guess). So I hoped someone here would maybe help me finding out what to do or at least give me some tips where to start because I´m slowly getting a mental breakdown... Thanks in advance.

The Problem

I've been fighting with this all day and I can get half way there, but I can't pull all the pieces together. I've read everything I can find on stackoverflow, but it's mostly about programming apps. I've dug through this forum and found a few tantalizing clues, but no answers yet.

I can successfully launch an application using a "Launch Application" type with com.google.android.youtube set. This works reliably and will open YouTube with no user interaction. Unfortunately that's where the success ends. Nothing else happens.

I can get a a pop-up (toast) to appear that says "New tag collected" when I use the URI type with the following data:

www.youtube.com/watch?v=jNQXAC9IVRw#intent;package=com.google.android.youtube

Tapping on the URI in the toast message launches youtube and starts the video playing.

What I can't seem to do is glue all this together and launch youtube without interaction.

Other Things I've Tried

Multiple records:

Writing a text record with the URI followed by an app record followed by com.google.android.youtube. This only launches youtube, no further action

URI Record with youtube://

Writing a URI record with youtube://youtu.be?v=jNQXAC9IVRw. This pops up the "New tag collected" with the youtube:// text, but it's unusable.

Any ideas you all have are greatly appredciated!

I'm new to NFC-TAGs and I wanted to know where to start when decrypting and if it's possible to decrypt. (I'm sorry if I used any wrong terms here or anything I'm pretty new to nfc)

The sole functionality that I need is

1. being able to identify an NFC tag by reading it (some sort of unique ID)
2. it not being possible to copy/replicate that NFC tag (someone can't come along with a reader and then replicate that tag)
3. Not being possible for someone else to overwrite the tag (password protected)

I'm pretty sure the NTAG424 DNA is designed for this use case, but actually using it with a mobile app for interfacing seems like a nightmare. I haven't received the tag yet but by reading around on the internet it seems like there is a lot of work required including setting up your own dedicated server etc.

If all I need is to be able to identify an NFC tag with a mobile phone and make sure that the tag can't easily be replicated, what is the most straightforward solution?

Firstly im a noob to all the NFC stuff.....

So i bought these cheap NFC rings off of Amazon. the little black ones with the faux diamond in them. Anyway, im having a hard time finding apps that work well with them. If there is any advice on which ones to use for what i would greatly appreciate it.

The main reason i need help is because i would like to be able to set up my google wallet or at least one card with it so that i can pay with it, i can do this right?

Secondary i would like to program one of them to unlock a door with it that i would normally use a key card for.

If anyone can give me some advice or point me n the right direction i would be eternally grateful.