mdeverdelhan/acr122u-reader-writer

A simple tool to read/write Mifare RFID tags with an ACR122U device

ACR122U-reader-writer

Here is a simple Java program to read/write Mifare RFID tags with an ACR122U device.

Features

• Read/dump Mifare Classic tags
• Write to Mifare Classic tags (block-wise)
• ACR122U compliant
• Supported tags: Mifare Classic 1K (only)
• JRE 7.0 or later
• MIT Licensed

Build

~$ mvn clean package

Usage

~$ java -jar ./acr122urw.jar -h
Usage: java -jar acr122urw.jar [option]
Options:
    -h, --help                      show this help message and exit
    -d, --dump [KEYS...]            dump Mifare Classic 1K cards using KEYS
    -w, --write S B KEY DATA        write DATA to sector S, block B of Mifare Classic 1K cards using KEY
Examples:
    java -jar acr122urw.jar --dump FF00A1A0B000 FF00A1A0B001 FF00A1A0B099
    java -jar acr122urw.jar --write 13 2 FF00A1A0B001 FFFFFFFFFFFF00000000060504030201

About the ACR122U reader/writer

The ACR122U NFC Reader is made by Advanced Card Systems Ltd (Hong Kong, China).

Device features

• PC-linked contactless smart card (NFC) reader/writer
• Contactless operating frequency: 13.56 MHz
• Supports: ISO14443 Type A & B, MIFARE®, FeliCa, 4 types of NFC (ISO/IEC18092) tags
• Interface: USB
• Operating Distance: Up to 50 mm (depends on the tag type)
• Operating Voltage: DC 5.0V
• Compliance/Certifications: ISO 14443, PC/SC, CCID
• Size: 98 mm x 65 mm x 12.8 mm
• Weight: 70 g

Notes

System requirements

~# # For Debian Testing
~# echo "install pn533 /bin/false" >> /etc/modprobe.d/blacklist-nfc.conf
~# echo "install nfc /bin/false" >> /etc/modprobe.d/blacklist-nfc.conf
~# modprobe -r pn533 nfc
~# apt-get install libpcsclite1 libccid pcscd libacsccid1 pcsc-tools
~# pcscd -f

Donations

Bitcoin address: 13BMqpqbzJ62LjMWcPGWrTrdocvGqifdJ3

acr122u-reader-writer's Issues

mfoc: ERROR: only Mifare Classic is supported

I have a problem with my ACR122.
All is ok, thanks to that page : https://www.latelierdugeek.fr/tag/mfoc/.
But i can-t copy the card because the terminal say : mfoc: ERROR: only Mifare Classic is supported
The card i want to copy is UID size double : myfare ultralight and mifare ultralight C so i need help to know how to deal with this.
Someone can help me please?

Update documentation

The app name is reader writer but from the help screen it is not clear how one can read in a card?

Windows support?

How can i run it on windows?
How can i add support for another card like sri 512?

Can it read UID only?

Can it only read UID without input any key?

Need include com.acs.smartcard library?

Hi. I couldn't get this project to work. The error is it can't detect the reader while I already plugged in USB ACR122U Reader. Looking at the pom.xml. Should I include the "com.acs.smartcard" library?

probably like this

<dependency> <groupId>com.acs.smartcard</groupId> <artifactId>acssmc</artifactId> <version>1.1.2</version> </dependency>

How to write string to card, not understanding one piece of code.

Is this just writing an array of bytes, I don't see String anywhere?

--write S B KEY DATA\twrite DATA to sector S, block B of Mifare Classic 1K cards using KEY\n

I don't understand this line above.

Is the following an array of bytes which translates to what? Can I hold a string value in a card and how would it be done?

--write 13 2 FF00A1A0B001 FFFFFFFFFFFF00000000060504030201"

How do i build this thing

How am i suppose to build this there is only one build instruction of mvn clean install, no further information?

Doesn't work with new MacOs Big Sur

When I try to write to the card nothing happens, on previous versions worked fine!

how write in NDEF format

how write in NDEF format

How do i get the "acr122urw.jar" file?

This is stupid i know. But I've been looking around for acr122urw.jar, didn't find it. Should i generate it from one of the java classes in the project?

Compatibility

Does it support acr1252u reader?

How to extract card number

Need Android App

Hello,
Do you have any android sample to read/write NFC code.Please send me...