This kit includes everything you need to get started with RFID. It includes a USB RFID board, ID-12 RFID reader, and 2 RFID cards. Project description, more information and ordering can be found at https://www.sparkfun.com/products/9875 RFID USB Reader: http://www.sparkfun.com/products/9963 ID-12 RFID Module: http://www.sparkfun.com/products/8419 RFID Card - 125kHz: http://www.sparkfun.com/products/10169 Datasheet: http://www.sparkfun.com/datasheets/Sensors/ID-12-Datasheet.pdf Quick Start Guide: http://www.sparkfun.com/tutorials/243 USB FTDI Drivers for Linux, MAC, and PC: http://www.ftdichip.com/FTDrivers.htm