I met my classmates and I was very happy really. Many of them have changed greately and their lives differ from what they have had before. One of them told that he created his own firm specializing in credit. And I got interested in it as I am connected with this sphere. I guess that many people who own credit cards are always afraid of something happening to them. I own a card and I wondered if there was something to protect me from card and identity fraud as nowadays it is widespread. My classmate told me that there is a special device thanks to which you don't have to put your signature for credit card payments. There is a special radio transmitter on a card that sends your signature and security code to your credit card company. So I think there is less opportunities for fraudsters to use your card in case it is stolen.