Contactless access card operating at 13.56MHz, designed for reliable integration with door access control systems. Reprogrammable and durable, each card includes a unique encrypted ID for secure identification. Key benefits Broad compatibility: Works with all kinds of door access control systems and is fully compatible with MIFARE Classic 1K (4byte UID, 1K Byte memory), following ISO/IEC 14443A protocol. Security and uniqueness: Each card carries a unique encrypted ID number, reducing the risk of duplicate credentials and simplifying user management. Reusable and longlasting: Supports read, write, and copy operations and endures over 100000 rewrite cycles, making it cost effective for ongoing use. Easy integration: Standard contactless protocol and memory structure make deployment straightforward with existing readers and access control platforms. Key specifications Operating frequency: 13.56MHz Compatibility: Compatible with all kinds of door access control systems; fully compatible with MIFARE Classic 1K (4byte UID, 1K Byte memory) Memory structure: 1K Byte memory organized into 16 sectors of 4 blocks each Protocol: Compliant with ISO/IEC 14443A protocol Operations: Read, write, copy; reprogrammable cards Identifier: Each card includes a unique encrypted ID number Endurance: Rated for over 100000 rewrite cycles Practical applications Office and building access: Issue to employees and contractors for secure entry and centralized access management. Time and attendance: Use as staff ID cards for clocking in and out while maintaining a unique, encrypted identifier for each user. Membership and event control: Manage access for members, visitors, or event attendees with reusable, reprogrammable cards. What makes this card stand out Interoperability with common access control hardware and standards ensures predictable behavior during installation and operation. Unique encrypted IDs combined with reprogrammability support scalable user management and card lifecycle reuse. Robust rewrite endurance supports frequent updates and longterm deployments without frequent replacement. This contactless card provides a practical, standardscompliant solution for secure and reusable access credentials in a variety of access control and identification scenarios.