I have mistakenly overwritten sector 1 block 7 of one of my Mifare classic 1k tags. It was meant for testing and the 16 byte data that I wrote on block 7 is shown below: 0xaa 0xaa 0xaa 0xaa 0xbb...

I'm trying to authenticate a Mifare Ultralight C (ISO/IEC 14443-2 and 14443-3 type A compatible) tag. I send the authentication command with the MifareUltralight.transceive() function provided in ...

Although many topics have already talked about the impossibility for an iPhone to emulate an NFC tag, I found this document that talks about card emulation based on the PassKit (on page 6). By imag...

i have a very fundamental issue when reading from a rfid chip using ios 13+ and swift 5, i have two setups (NFCNDEFReaderSession and NFCTagReaderSession), NFCNDEFReaderSession: import UIKit impor...

I want to do this to protect the card from erasable or cloning the card. I read many documents Some tell the user the fourth block to set permission to reading and write.. According to @Michael Ro...

I have a card reader that always report 64 bits, and can read cards with 4 or 7 byte UIDs. As an example, I see it can report: 04-18-c5-82-00-00-00-00 - a 4-byte UID in the form uid0-uid1-uid2-u...

I would like to retrive the UID of MiFare cards. I'm using an iPhone X, Xcode 11 and iOS 13. I'm aware this wasn't possible (specifically reading the UID) until iOS 13 according to this website: ...

Which APDU command gets 7 bytes of the card ID? I use T=CL (ISO7816) protocol with ISO14443 layer. On detect card I can see only 4 bytes of the card ID. I found that this should be the APDU command...

I am working on an application that required reading the mifare card serial number, the language I am working with is C#. I am new to mifare reader programming, so I am sorry for asking dumb ques...

This question is specifically about MIFARE Ultralight C/EV1, or MIFARE DESFire EV1, or even NTAG cards. I want to implement a system of tokens, so that each time a normal user reads one of those ca...

I need to write/read textual data to an NFC tag. The way I am expecting the read/write should work is the following: First time write I should be able to set password. Next time when anyone tries...

Which of MIFARE cards support a single block that can be programmed to require a password for writing, but is available to everyone for reading its data? And is such standard eligible on all platfo...

I need to read serial number of MiFare card usin WinSCard. I am able to read 7B UID from the MiFare card. The confusion is that i dont know if the UID and the serial number of MiFare card are s...

I have researched Mifare and other card emulation I have very good knowledge in programming (not Android, but C/C++). I have proxmark and I have made multiple emulation codes for proxmark, so I kno...

I am facing a very strange problem with MIFARE DESFire. When I write small amounts of data (e.g. 11 bytes), the write operation succeeds. However, when I try to write e.g. 50 byte, the response is ...

I am writing an app that works with NFC and MIFARE CARD. When my NFC device detect a card, it shows me the list of application that can use NFC, but my application is not mentioned. What I am mi...

Good morning, I would like to use the write method I found on the page: https://developer.android.com/guide/topics/connectivity/nfc/advanced-nfc.html, to write on an ultralight mifare. I have not y...

I would like to write a Java Card applet that responds to an NFC reader as if it was a regular MIFARE Ultralight or NTAG NFC tag. I am aware the MIFARE protocol is proprietary and may be a little ...

I was at the WWDC and was able to detect NFC Cards provided by Apple Labs with the following code: nfcSession = NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: false) nfc...

I'm trying to pass though APDUs command via HID OMNIKEY 5427 CK to operate MIFARE Card ie. Ultralight C card, on the Windows 10 x64 OS environment using WinSCard.dll. (I'm under NXP NDA and have fu...

I have been trying for more than a week to make an Android phone authenticate with a Mifare Ultralight C. I have confirmed I can write to the tag (by writing to an unsecured memory page and then re...

I would like to be able to set and unset password protection on a MIFARE Ultralight EV1 (MFOUL21) tag using the NfcA? tag technology on Android. I understand I would use the nfcA.transceive() meth...

I have an app which reads and writes NFC tags. I tested my app on a Galaxy Note 3 and it works fine. But when I test it on a Note 5 and a Galaxy S6, a message pops up that says, "NFC tag type not s...

I have a contactless card and I know it is a MIFARE card. I have no document and no authentication key. After a reset, I received the following ATS: myubuntu@lol-MS-7693:~$ nfc-list nfc-list us...

I started my studies using NFC in Android. I can easily read and write in NDEF format. My problem is with MIFARE DESFire EV1, I have some factory cards and I understand that they do not conform to...