User:Shift Touko/sandbox/proxmark3



 is a general purpose open source radio-frequency identification tool designed to work with RFID tags and NFC devices. With the ability to communicate both at low and high frequencies it supports a wide variety of tags. It is mainly used for the purpose of security research and penetration testing, and has become the de facto standard due to its powerful capabilities and continued community support.

Usage
Proxmark3 is used for interaction with various systems operating at both low (125 kHz-134 kHz) and high (13.56 MHz) frequency. It can operate in different modes: as a reader, a sniffer or an emulator. A USB connection is required to interface with the proxmark3, open source software is used to communicate with the device in order to send commands and recieve data.

History
Originally developed by Jonathan Westhues as a PHD project to facilitate the research of RFID systems. Since May 2007 both hardware schmatics and software are in the public domain under the General Public License. Since 2009 Johnathan has wisdrawn from the project development and further development was done by the open-source community. At the time of development microcontrollers were unable to provide high-bandwidth signal processing and precise timing required by the RFID protocols, thus an FPGA was used to emulate the necessary hardware and prevent the microcontroller from being overloaded with signal data. This architecture utilizing both an FPGA and a microcontroller persisted throuought the development of new hardware revisions facilitating continued improvement of relative software.

Variations
Since it's original release in 2007 there have been several revisions by different manufactures. They follow the original architecture improving on the overall design and implementing minor changes, the latest being Proxmark3 RDV4 featuring modular design with the ability to expand the device to provide BLE/Wifi capabilities.