Posts

Image
RFID systems operate across various frequency ranges and types, each with distinct characteristics and applications.  Below is an overview of the main types of frequencies: 1. Low Frequency (LF) RFID: Frequency Range:  30 kHz to 300 kHz (typically 125 kHz or 134 kHz) Read Range:  Short (up to 10 cm) Characteristics: Lower data transfer rates. Good penetration through non-metallic materials. Less susceptible to interference from water or metal compared to higher frequencies. Lower cost. Applications: Access control. Animal tracking. Industrial applications. 2. High Frequency (HF) RFID: Frequency Range:  3 MHz to 30 MHz (typically 13.56 MHz) Read Range:  Short to medium (10 cm to 1 m) Characteristics: Moderate data transfer rates. Moderate sensitivity to interference. Widely used in smart card applications. Applications: Contactless payment systems (NFC). Electronic ticketing. Access control. Smart cards (MIFARE) . 3. Ultra-High Frequency (UHF) RFID: Frequency Ran...
Post a Comment
Read more

what is DESFire EV3?

Image
The MIFARE DESFire EV3 is a highly secure contactless smart card technology developed by NXP Semiconductors.   Here's a breakdown of its key features and uses: Purpose: It's designed for applications requiring high security and flexibility, such as: Public transportation ticketing Access control Loyalty programs Micropayments Citizen IDs Key Features: Enhanced Security: Common Criteria EAL5+ certified, indicating a high level of security. Uses advanced encryption algorithms, including AES-128. Features robust authentication mechanisms to prevent unauthorized access. Proximity check to help prevent relay attacks. Flexibility: Supports multiple applications on a single card Offers a flexible file structure for diverse data storage. Backwards compatibility with previous DESFire generations. Contactless Technology: Operates using ISO/IEC 14443 Type A contactless technology. Enables fast and convenient data transfer. NFC Compatibility: It is com...
Post a Comment
Read more