NXP Semiconductors has developed the MIFARE Classic MF1S50 to be used in a contactless smart card according to ISO/IEC 14443 Type A.
The MIFARE RFID CARD Classic 1K MF1S50 IC is used in applications like public transport ticketing and can also be used for various other applications.
Anticollision
An intelligent anticollision function allows to operate more than one card in the field simultaneously. The anticollision algorithm selects each card individually and ensures that the execution of a transaction with a selected card is performed correctly without interference from another card in the field.
Simple integration and user convenience
The MF1S50 is designed for simple integration and user convenience which allows complete ticketing transactions to be handled in less than 100 ms.
Security
• Manufacturer programmed 7-byte UID or 4-byte NUID identifier for each device
• Random ID support
• Mutual three pass authentication (ISO/IEC DIS 9798-2)
• Individual set of two keys per sector to support multi-application with key hierarchy
Features and benefits
EEPROM
> Contactless transmission of data and supply energy
> Operating distance up to 100 mm depending on antenna geometry and reader configuration
> Operating frequency of 13.56 MHz > Data transfer of 106 kbit/s
> Data integrity of 16-bit CRC, parity, bit coding, bit counting
> Anticollision
> Typical ticketing transaction time of < 100 ms (including backup management)
> 1 kB, organized in 16 sectors of 4 blocks (one block consists of 16 byte)
> User definable access conditions for each memory block
> Data retention time of 10 years
> Write endurance 100000 cycles
Applications
> Public transportation
> Access management
> Electronic toll collection
> Car parking
> School and campus cards
> Employee cards
> Internet cafés
> Loyalty

If chip rfid inlay of the card is kinked, so the antenna can break off from the chip and the card will be destroyed. RFID card chips that meet certain standards, which relates to the transmission protocol of the radio interface as well as the encryption standards for the storage of the information.
The standards ISO 14443 provides a standardization for the transmission of information in the proximity range (<10cm) dar. The Vicinity range from 10 cm to 100 cm is described by ISO 15693.