The spelling of "contactless card" is straightforward, but its pronunciation may be tricky for non-native speakers. The word contactless is spelled /kənˈtæktləs/ in IPA phonetic transcription, indicating that the stress falls on the second syllable. The word card is spelled /kɑːd/, and its pronunciation is straightforward. When combined, the two words form a compound word that refers to a payment card that uses near-field communication (NFC) technology for payment processing, without requiring physical contact with a payment terminal.
A contactless card, often referred to as a proximity card or a tap-and-go card, is a type of payment card or identification card that uses radio frequency identification (RFID) technology to enable secure and convenient transactions without the need for physical contact with a card reader.
Contactless cards contain a small embedded chip and an antenna that transmits and receives information wirelessly. This enables the card to communicate with a compatible card reader or terminal when it is placed within close proximity, usually within a few centimeters. The card reader emits a radio frequency signal that activates the chip in the card, allowing the necessary data to be transferred between the card and the terminal.
These cards offer an efficient and fast method of making payments or accessing services, as a simple tap or wave of the card near a contactless-enabled terminal is all that is required for the transaction to be processed. Additionally, contactless cards are designed with robust security features, such as encryption and authentication mechanisms, which ensure that transactions are conducted securely and protect against unauthorized access or data theft.
Contactless cards are widely used in various sectors, including retail, transportation, banking, and access control. They provide users with a convenient and expedient payment option, reducing the need for cash or physical contact with payment terminals. The use of contactless cards has become increasingly popular, contributing to the overall transition towards a more digital and cashless society.
The word "contactless card" is a compound word consisting of the adjective "contactless" and the noun "card". The etymology of "contactless" dates back to the mid-19th century, where "contact" derives from the Latin word "contactus", meaning "a touching or meeting", and the suffix "-less" indicates the absence of something. In the case of a contactless card, it refers to the absence of physical contact needed between the card and the card reader for information exchange.