PC-Lock MPC203 is an easy and effective way for parents and educators to prevent and control PC and Internet access. Plugging into USB-ports PC-Lock MPC203 does not allow persons without possession of PC-Lock MPC203 to start Windows. It also locks, sets time limits or authorizes specific websites or websites containing certain key words. Functionality is added over time and the value of PC-Lock increases over time - keep track by downloading the newest drivers