I'm Yang from Nanjing University of Aeronautics and Astronautics (NUAA), China. I major in information security and recently I've gained an interest in RFID security. I want to use the Proxmark3 Kit, ACR122U USB NFC reader and several Mifare 4K cards. When I get these powerful tools, I plan to do some RFID security research. I will run some tests on my campus card to see whether it is secure enough. Also, I'm going to use the results of my work to participate in some competitions in China. Thanks Rysc Corp for providing such useful tools.