NFC Forum Type 1

NFC Forum Type 1 is the original NFC tag specification based on ISO 14443-3A at 106 kbps. Type 1 tags use a simple memory structure with static and dynamic memory areas, supporting read/write operations with optional OTP (one-time programmable) lock bits. The primary implementation is the Broadcom Topaz chip. Type 1 tags are largely legacy technology, superseded by Type 2 in most use cases.