The correct answer is: B. Contactless smart card
A contactless smart card is a smart card that can be read from a distance using an RFID (radio-frequency identification) reader. The card contains an embedded microchip that stores data, which can be read or written to by the reader. Contactless smart cards are often used in applications where convenience is important, such as public transportation, access control, and payment systems.
A contact smart card is a smart card that must be physically inserted into a reader in order to be read or written to. Contact smart cards are often used in applications where security is important, such as credit cards and debit cards.
A proximity smart card is a type of contactless smart card that can be read from a short distance away, typically within a few inches. Proximity smart cards are often used in applications where convenience is important but security is not as critical, such as access control systems.
In conclusion, the correct answer is B. Contactless smart card. Contactless smart cards use an antenna to read and write data, while contact smart cards must be physically inserted into a reader. Proximity smart cards are a type of contactless smart card that can be read from a short distance away.