RF Access

MF1SEP1001DA4/03J application field and working principle

MIFARE® 1K/4K is a self-contained 13.56 MHz contactless smart card with >1KB/4KB EEPROM. It is compatible with ISO 14443A and MIFARE standards. It is designed to serve a wide range of security, access control, authentication, and data-storage needs. With its higher security, leverage of existing ISO 14443A infrastructure and more memory, it is ideal for complex applications.

The MF1SEP1001DA4/03J application field covers public transport, access control, loyalty programs, event ticketing and other e-cash. As a low-cost, low-energy device, it offers a secure, reliable and convenient access control solution for its users.

The working principle of MF1SEP1001DA4/03J is based on a 13.56 MHz contactless smart card with a frequency modulation technique. When the card is presented to the reader, the reader sends a signal of 13.56 MHz carrier frequency to the card. The card can receive signals from the reader and parses the command in the signal. If the command is valid, it will revert to the served valid data.

The MF1SEP1001DA4/03J also features an authentication process using a mutual three-pass protocol. The card and reader authenticate each other and start a secure communication. This data exchange is secured by using a shared secret complex key, unique for each card. Thanks to this secure data exchange, the system is upgraded to a higher level of security.