contactless smart cards

Contactless smart cards are security cards embedded with a small computer chip and antenna, allowing data to be transmitted wirelessly via radio frequency. When the card is near a compatible reader, it securely exchanges information to verify identity or grant access, such as for payment or building entry. This technology enables quick, contact-free transactions without physical swiping or inserting the card, offering convenience and enhanced security through encrypted data exchange. Examples include contactless payment cards, transit passes, and employee ID badges.