DIY USB Smartcard Lock (keyboard/mouse lock) controlled by phone-cards HD

Link to page: http://adf.ly/HCGYb I made a USB lock to lock and unlock my 4 USB ports that exist in the front of my PC case. The keyboard and mouse are connected to these ports, therefore i can lock both the keyboard and mouse. The lock is controlled by a smartcard reader. For keys i use old and expired telephone cards, with the typical smarcard chipset. You can find complete documentation, schematics, PCb designs, bill of materials and PIC firmware in my website. Additionally, you may wanna read a theory regarding the smarcard chipset, and how you can read and write using a microcontroller: http://www.pcbheaven.com/userpages/How_Phonecard_Smart_Cards_Work/ Or you may wanna check out a very simple circuit that i made some time ago. I use a PIC microcontroller to read the contents of a smartcard and show them in a 20 by 4 LCD: http://www.pcbheaven.com/userpages/PIC_Smartcard_Phonecard_Reader/