How are phone cards activated by the cashier when you buy them?

The phone card has a serial numer on it. When you purchase the card, the computer register reads the serial number from the magnetic strip and sends the information via telephone lines to the central computer database of the company who gives the service.





When you make a call later using the card. The central computer will check to make sure the card serial number has been activated.

How are phone cards activated by the cashier when you buy them?
the phone card has a magnectic strip on the back, when they scan it through the register it activates it so when you get ready to use it all you have to do is put your pin # in to id it
Reply:Some stores have a machine which activates them and others have to call them in to do so. If your buying them from a machine, they have already been programmed to be activated as you place your first call.