A Mifare card reader is a type of contactless smart card reader that is specifically designed to read and write data to cards using NXP’s Mifare technology. Unlike generic RFID readers that only read a unique serial number (UID), a Mifare reader can access and manage the encrypted memory sectors on a Mifare card.
- The technology operates on the 13.56 MHz high-frequency range, adhering to the ISO/IEC 14443 Type A standard. This is the same frequency used by NFC (Near-Field Communication), allowing Mifare readers to communicate with most modern smartphones.
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How it Works
- When a Mifare card is placed near the reader, the reader’s magnetic field wirelessly powers the card’s internal chip and antenna.
- A secure, two-way communication channel is then established.
- The reader can not only identify the card’s unique ID but also read from and write to its memory sectors, which are protected by a key-based access control system.
- This ability to store and manage data on the card itself makes it far more versatile and secure than simple proximity cards.
Types and Features
Mifare card readers come in different forms to suit various applications:
- USB Desktop Readers: These are small, desktop-based readers that connect to a computer via USB. They are primarily used for enrolling users or for secure computer login, as they allow you to read a card’s data directly into an application.
- Standalone Readers: These readers are used for access control and are mounted on walls or doors. They work independently or in a network to grant or deny access based on the data read from a card.
- Integrated Readers: Mifare technology is often integrated into other devices, such as biometric attendance machines, point-of-sale (POS) terminals, and public transport turnstiles.
- Key Features: Look for features like support for different Mifare variants (Classic, DESFire, Plus), support for common communication protocols (Wiegand, RS-485, USB), and anti-tampering measures.
Common Applications
Mifare card readers are essential components in systems that rely on secure, fast, and multi-functional contactless cards:
- Access Control Systems: Used to grant or restrict access to doors, gates, and elevators in offices, residential buildings, and secure facilities.
- Time and Attendance: Employees can tap their Mifare cards on a reader to clock in and out, with their ID and attendance data managed by a central system.
- Cashless Payment Systems: Commonly used in school cafeterias, corporate canteens, and vending machines for quick, cashless transactions.
- Public Transport: A cornerstone of “tap-and-go” payment systems for buses, metros, and trams worldwide (e.g., Oyster Card in London).
- Loyalty and Membership Programs: Used by retailers to track customer loyalty, store points, and offer rewards.
- IT and Security System Vendors: Companies like AITS Distributions, Ahmed Infotech Solutions are major suppliers of access control and biometric products and carry a wide range of Mifare readers.
- Omnikey 5025CL 5022 Smart Card Reader
