ISO/IEC 14443 Type B is one of the variations of the ISO/IEC 14443 standard for contactless smart card communication. It specifies the physical characteristics, transmission protocol, and anti-collision mechanism for contactless smart cards and readers operating at 13.56 MHz frequency. ISO/IEC 14443 Type B is commonly used in various applications, similar to Type A, including contactless payment systems, access control, public transportation fare collection, and electronic ticketing.
See the typical ISO 14443 Type B modulation pattern:
Here are some key characteristics and features of ISO/IEC 14443 Type B:
1. Operating Frequency
ISO/IEC 14443 Type B operates at 13.56 MHz, which is a commonly used frequency band for contactless smart card communication.
2. Communication Protocol
ISO/IEC 14443 Type B defines the communication protocol between the contactless smart card and the reader. This includes procedures for card activation, data transfer, and error detection.
3. Modulation Scheme
ISO/IEC 14443 Type B typically uses either amplitude shift keying (ASK) or phase shift keying (PSK) modulation schemes for communication between the card and the reader.
4. Frame Structure
Similar to Type A, Type B also defines the structure of data frames for transmission between the card and the reader. Frames consist of a header, data field, and error detection code.
5. Anti-Collision Mechanism
ISO/IEC 14443 Type B incorporates an anti-collision mechanism to allow multiple cards to be in the reader's field simultaneously without interference. This ensures efficient communication in environments with multiple cards.
6. Data Transfer Rate
ISO/IEC 14443 Type B supports higher data transfer rates compared to Type A, with rates of up to 848 kbit/s. This allows for faster communication between the card and the reader.
7. Security Features
Like Type A, Type B includes provisions for security features such as authentication, encryption, and data integrity verification. These features help protect the data stored on the card and prevent unauthorized access.
8. Application Areas
ISO/IEC 14443 Type B is widely used in various applications, including contactless payment systems, access control (e.g., building security, employee identification), public transportation fare collection (e.g., metro cards, bus passes), and electronic ticketing (e.g., event tickets, airline boarding passes).
Overall, ISO/IEC 14443 Type B is a widely adopted standard for contactless smart card communication, providing interoperability between different vendors' products and enabling secure and efficient communication between smart cards and readers in various applications.