Contactless smart cards cater to many similar applications encompassed by contact smart cards, but allows for faster and more convenient transactions by eliminating the need for contact between the card and the reader. The demand and acceptance for this type of card is rapidly growing, with major deployments worldwide in applications such as micro-payment, physical and logical access control, government and corporate IDs, and automatic fare collection.
A Radio Frequency Identification ( RFID ) device serves the same purpose as a barcode or magnetic strip on the back of a credit card or ATM card. It identifies the object on the basis of a unique identifier for that object. It is used for identification of objects or people and inventory management. An RFID card is usually used at homes and offices.
MIFARE technology is for smart cards. There are two criterion to define smart cards; one is the method of writing and reading card data and second is the type of chip within the card and its capabilities.