page_title: Contactless smart card
section_title: Overview
hierarchical_section_title: Contactless smart card / Overview
caption_attribution_description: A modified version of File:Smart_card_chip_on_penny.JPG, with text removed.
context_page_description: A contactless smart card is a contactless credential whose dimensions are credit-card size. Its embedded integrated circuits can store data and communicate with a terminal via NFC. Commonplace uses include transit tickets, bank cards and passports.
  There are two broad categories of contactless smart cards. Memory cards contain non-volatile memory storage components, and perhaps some specific security logic. Contactless smart cards contain read-only RFID called CSN or UID, and a re-writeable smart card microchip that can be transcribed via radio waves.
context_section_description: A contactless smart card is characterized as follows:
  Dimensions are normally credit card size. The ID-1 of ISO/IEC 7810 standard defines them as 85.60 × 53.98 × 0.76 mm (3.370 × 2.125 × 0.030 in).
  Contains a security system with tamper-resistant properties (e.g. a secure cryptoprocessor, secure file system, human-readable features) and is capable of providing security services (e.g. confidentiality of information in the memory).
  Assets managed by way of a central administration systems, or applications, which receive or interchange information with the card, such as card hotlisting and updates for application data.
  Card data is transferred via radio waves to the central administration system through card read-write devices, such as point of sales devices, doorway access control readers, ticket readers, ATMs, USB-connected desktop readers, etc.
caption: Size comparison of chip compared to a Canadian penny
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