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Questions tagged [acr122]

The ACS ACR122U NFC Reader is a PC-linked contactless smart card reader/writer developed based on the 13.56 MHz Contactless (RFID) Technology.

The ACS ACR122U NFC Reader is a PC-linked contactless smart card reader/writer developed based on the 13.56 MHz Contactless (RFID) Technology. Compliant with the ISO/IEC18092 standard for Near Field Communication (NFC), it supports not only Mifare® and ISO 14443 A and B cards but also all four types of NFC tags.

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Cannot authenticate NTAG213

I am using an ACR122U NFC reader to password protect an NTAG213 NFC label. I think I have managed to set the password correctly, but I cannot authenticate and change the label afterward. My code for authenticating looks like this: #include…
Ivan Johansen
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The PN532 configured as target has been released by its initiator

I'm trying to put my PN532 in card-emulation mode. When i send the TgGetData command the error i get an error back from the reader. 1 . Read register {(byte)0xFF,0x00,0x00,0x00,0x08, (byte)0xD4, 0x06, 0x63, 0x05, 0x63, 0x0D, 0x63, 0x38 } RESPONSE…
S.Pols
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Is this possible to send NFC signal from NFC read/writer to Iphone

I’m creating a mobile application that fetched data based on ID which generated on PC. I want to pass this ID as a text string from my NFC device which supports read and write to an iPhone device when the user touch on the NFC device. Is this…
Tuan Ngo
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Android ACR122U NFC integration

See NFC reader "SELECT (by AID)" APDU is not routed to Android device on debugging and eventual results. TL;DR the reader might simply be defunct. I have ACR122U reader connected to my Android device. My final goal is to use another Android device…
cliffroot
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How to authenticate NTAG213 with ACR122U

I'm using an ACR122U reader with an NTAG213 card. The card is password (reading and writing) protected with the password 52 84 00 08. What are the APDU commands I should run to authenticate the card and also to read pages 30 and 31 of it once…
KaZaaV2
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Mifare Ultralight C tag Auth0 time issue

I am using ACR 122u NFC Reader/Writer and Mifare Ultralight C tag to authenticate and read block data, but encountering an issue while doing so: When I use following command: FF 00 00 00 04 D4 42 1A 00 For Auth0 i.e get challenge I receive…
FaizanHussainRabbani
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libnfc: Write and read back custom data from NTAG

I have been trying for a long while now to write and read data from my NFC cards. The cards are NTAG216. I can use libnfc examples to read manufacturer ID and it works fine. But I need to write to each tag some custom data, e.g. the string "abcdefg"…
Stefano Mtangoo
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Writing Ndef to NFC tag in Windows Form Application C# using ACR122U as Reader/Writer

I am trying to create and write an NDEF message to an NFC tag in a Windows Form Application (written in C#) using an ACR122U NFC reader. I have created raw bytes of the NDEF message using Andreas Jakl's NDEF library. This is the C# code: var…
Abdul Basit
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Libnfc How to read NFC card content?

I'm trying to simply read an ISO 14443-2B ST SRx card content using ACR122 card reader. I've set up my environment with Libnfc and the proper reader driver. Right now I've managed to write a code that simply read the card UID and prints that…
d.lime
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reading apple pay token using a ACR122 NFC reader

I have a ACR122 NFC reader and trying to see if I can read the token generated by Apple Pay. Below is some code in Java I am trying but only returns a 4 alpha numeric character every time. The Apple Pay iphone senses the nfc reader - are there…
user1615573
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Difference between 'Direct Transmit Command' (ACR122U) and 'PC_to_RDR_Escape' (ACR1251U)

With an ACR122U I know you can transmit direct messages to the NFC controller (PN532) by using the direct transmit command: 0xff 0x00 0x00 0x00.... When I read the manual of the ACR1251U it say: The reader's peripherals control commands are…
S.Pols
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NFC Reader <-> Android communication and Android listener

I have some questions about the communication between a NFC reader and an Android phone. The first subject is the Android / NFC reader modus: What is the best way to pass a unique identifier from the NFC reader (ACR122U) to an Android device?…
S.Pols
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NFC Programming in Android and ACR122U reader

I need to write some data into an NFC tag, the tag I need is not a physical NFC tag but I need to make a tag programatically and write my data into it (card emlation or peer-to-peer mode). This tag which I make in the phone has to be readable by the…
Binoy S Kumar
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Can't read card with NFC/RFID reader through Python

I've bought a NFC card reader (ACS / ACR122U) that I plug in my raspberry 3 thru an USB port; I've installed swig, pcsc-tools, pcscd ,libpcsclite... The pcscd service is launched by systemctl and is bind to pcscd.socket. I can see the reader when I…
David
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Unable to claim USB interface (Device or resource busy) Stuck

I am trying to use the ACR122U reader. I installed everything, however when I use nfc-list or any other command I get : me@me:~$ nfc-list nfc-list uses libnfc 1.7.1 error libnfc.driver.acr122_usb Unable to claim USB interface (Device or…
Abdullah Barnawi
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