How Credit Cards Work
Credit cards are published after an calculate has been sanctioned by the credit supplier, after which cardholders could use them to make leverages at merchandisers accepting that card.
Once a leverage is created, the credit card user fits to pay up the bill issuer. The cardholder suggests his/her accept to pay, by signing on a reception with a record of the card details and pointing the amount of money to be made up or by entering a PIN . Also, many merchandisers now accept verbal authorisations via call and electronic authorisation using the Internet, called a ‘Card/Cardholder Not Present’ (CNP) dealing.
Electronic confirmation systems allow merchandisers to verify that the bill is valid and the credit card client has sufficient credit to cover the leverage in a couple of seconds, allowing the confirmation to happen at time of purchase. The confirmation is performed using a credit card payment terminal or Point of Sale (POS) system with a communications connect to the merchant’s acquiring bank. Data from the card is obtained from a magnetic stripe or chip on the card; the latter system is in the UK and Ireland commonly called Chip and PIN, but is more technically an EMV card.
Every month, the credit card user is sent a affirmation indicating the leverages taken on with the card, any spectacular fees, and the total amount due. After obtaining the statement, the cardholder may dispute any bills that he or she believes are incorrect (see Fair Credit Billing Act for details of the US regulations). Otherwise, the cardholder must pay a defined minimum proportion of the bill by a due date, or may decide to pay a higher amount up to the entire amount owed. The credit supplier charges interest on the amount owed (typically at a much higher rate than most other forms of debt). Some financial organization can set for automatic payments to be deduced from the user’s bank bills, thus averting late payment altogether as long as the cardholder has sufficient cash in hand.
Source: Wikipedia