All About Proximity Cards

Published on March 25 2016

125khz Proximity Card are basically access control smart cards that offer its users the dual advantage of logical access control as well as physical access control. These cards are of immense use to enterprises, as they provide accessibility to computers, networks and last but not least resources of the organization. Thus, proximity cards can enable you to gain access to restricted area and computer system. These proximity cards have largely reduced the overall security cost of organization. In addition to it, these prox cards can also be used for varied other purposes such as email encryption, web authorization, digital signatures and many more.

Proximity card readers are known for their versatility. You can install them anywhere on the computer, office table or entrance of the building. Most of the proximity card readers use rechargeable batteries, while others have a battery back up system. As in the case of most of the access control systems, you can customize proximity card readers to accommodate passwords and usernames.

NXP has developed the MIFARE® MF1 IC S50(MIFARE® Classic 1k S50) to be used in a contactless smart card according to ISO/ IEC 14443 Type A.

The MIFARE® MF1 IC S50 IC is used in applications like public transport ticketing where major cities have adopted MIFARE® as their e-ticketing solution of choice, and also payment(Rechargeable).

Feature
1.1 MIFARE®, RF Interface (ISO/ IEC 14443 A)
* Contactless transmission of data and supply energy (no battery needed)
* Operating distance: Up to 100mm (depending on antenna geometry)
* Operating frequency: 13.56 MHz
* Data transfer: 106 kbit/s
* Data integrity: 16 Bit CRC, parity, bit coding, bit counting
* Anticollision
* Typical ticketing transaction: < 100 ms (including backup management)
1.2 EEPROM
* 1 Kbyte, organized in 16 sectors with 4 blocks of 16 bytes each (one block consists of 16 byte)
* User definable access conditions for each memory block
* Data retention of 10 years.
* Write endurance 100.000 cycles
1.3 Security
* Mutual three pass authentication (ISO/IEC DIS 9798-2)
* Individual set of two keys per sector (per application) to support multi-application with key hierarchy
* Unique serial number for each device

Related reading：ISO smart card ATA5577 key card