{"id":12420,"date":"2026-09-10T11:42:41","date_gmt":"2026-09-10T03:42:41","guid":{"rendered":"https:\/\/www.dccochina.com\/?p=12420"},"modified":"2026-09-10T11:49:37","modified_gmt":"2026-09-10T03:49:37","slug":"how-do-you-select-a-contact-card-chip-based-on-storage-and-security-requirements","status":"publish","type":"post","link":"https:\/\/www.dccochina.com\/es\/how-do-you-select-a-contact-card-chip-based-on-storage-and-security-requirements\/","title":{"rendered":"How do you select a contact card chip based on storage and security requirements?"},"content":{"rendered":"

When selecting a contact card chip, consider two key questions: How much data does the card need to store? What level of protection do these data or credentials require? These two requirements point to different types of chips.<\/p>\n\n\n\n

Simply defaulting to the chip with the largest storage capacity or the highest security level is often not the best solution. Doing so may increase costs and development complexity without improving the application’s effectiveness. Therefore, the selection process can follow this sequence:<\/p>\n\n\n\n

Data Requirements \u2192 Storage Architecture \u2192 Security Requirements \u2192 Application Architecture \u2192 Contact Card Chip<\/strong><\/p>\n\n\n\n

The following sections discuss how to select a contact card chip based on storage and security requirements.<\/p>\n\n\n\n

Selecting a Contact Card Chip Based on Card Storage Requirements<\/h2>\n\n\n\n

When selecting a chip based on storage requirements, focus on the content to be stored and how often it changes, not just storage capacity. Contact smart chips<\/mark><\/a> offer a wide range of storage capacities, from a few hundred bytes of EEPROM to several hundred kilobytes of secure application storage; however, these storage types serve vastly different purposes.<\/p>\n\n\n\n

Low-Capacity Contact Chips: Suitable for Simple Identity Verification and Fixed Data Storage<\/h3>\n\n\n\n

For simple application scenarios, memory-based contact cards often meet requirements.<\/p>\n\n\n\n

For example, the FM4442 series<\/a> of memory chips provides 256 bytes of EEPROM, a 32-bit protected area, and control over data modification via a programmable security code. The FM4428 series offers increased storage capacity of approximately 1 KB.<\/p>\n\n\n\n

The FM4442 and FM4428 chips are ideal choices when cards are primarily used to store the following information:<\/p>\n\n\n\n