cell phone
...l phone while driving has been debated for the long time, because there are two factions of people have different opinions on it; one supports using cell phone while driving and one doesn・t. The government hasn・t legislated to prohibit it, but I still believe there will be more and more accidents of using cell phone while driving. Can you imagine one of your family members is living fear of death because the driver is using cell phone? I think no one wants this thing to happen on the family, right? So, we must act to stop that don・t use cell phone while driving. In next few minutes, I will talk about three things F cell phone phreaking Cellular Phreaking The cellular/mobile phone system is one that is perfectly set up to be exploited by phreaks with the proper knowledge and equipment. Thanks to deregulation, the regional BOC's (Bell Operating Companies) are scattered and do not communicate much with each other. Phreaks can take advantage of this by pretending to be mobile phone customers whose "home base" is a city served by a different BOC, known as a "roamer". Since it is impractical for each BOC to keep track of the customers of all the other BOC's, they will usually allow the customer to make the calls he wishes, often with a surcharge...