Credit card transactions have two components that are authorization and settlement. Plastic money is widely used by the clients, as it is extremely easy and fast processing. A Credit Card machine is a compact device that is enabled to process the transfer of money from the buyer to the seller account within seconds. While doing the transaction, an authorization request will be sent to the purchaser and after the valid approval, the amount will be transferred. It is a method to increase the sale as people do not want to handle cash and providing the multiple payment options can help the company to attract more customers. Moreover, financial institutions such as banks and other agencies offer lucrative discounts on using the credit card which also pushes the customers to use it. Well, old credit card machines come with a wire through ethernet or telephone line and it is connected at the point of sale, it comes in all sizes and shapes. With the advancement in technology, cred...