If a transaction should be typed in the machine for it to be validated, a machine without a printer would be needed. On the other hand, a retail business would require a credit card machine with a printer.

Machines without printers are usually used in enterprises that use mail or phone to purchase. In this type of business, a receipt at the time of purchase is not needed.

For mobile enterprise, a machine without a printer could also prove to be useful. In this system, the number of the credit card is phoned to a specific location. There, another person will type the number into the machine. Examples of these businesses are locksmiths, plumbing, landscaping, home delivery operations and other business. These are enterprises that do not have enough sales to spend for the high cost of wireless machines. A machine without a printer would still be effective while maintaining the capability to work on a transaction at the same location and time of sale.

Wireless machines for credit cards will be very useful for mobile enterprises. It would require though, high maintenance cost and cellular signal availability.

An enterprise that uses credit cards that need to be typed and swiped should have two accounts handled by the same machine. This is a cost-effective way of managing business if the numbers of typed and swiped card accounts are about the same in volume.

If an enterprise caters to different accounts, a machine compatible to multiple accounts would be very productive. Examples of these businesses are hair styling, massage and the like.

If a company would only accept Visa card and Master card, it can use a much cheaper machine for credit cards that can only accept these types of cards.

The best way to determine what credit card machine to use is to survey potential customers. The survey should yield the type of credit card they use for a specific product or service.

For example, if a person is planning to open a car rental business, the owner should survey the area for people who usually rent cars. Then, he or she should ask what type of credit card these potential customers use. If the usual card used needs to be swiped, then the owner should purchase a machine for those cards.

By adjusting to the consumer's credit card use, a business could cater to a greater number of customers.