The Mifare Classic 1K card is a type of contactless smart card that operates on radio frequency identification (RFID) technology. It is manufactured by NXP Semiconductors and is commonly used for various applications such as access control systems, public transportation, and payment systems. Key Features: Memory Capacity: The Mifare Classic 1K card has a memory capacity of 1 kilobyte (1024 bytes). The memory is divided into sectors and blocks, with each block containing 16 bytes. Operating Frequency: The card operates at 13.56 MHz, which is a common frequency for RFID communication. Security: These Mifare Classic cards use a proprietary security protocol which is known as CRYPTO1. However, the important to note that the security of Mifare Classic good and there have been documented vulnerabilities. It is also recommended to use more secure alternatives, especially for applications requiring high security levels. Applicatio