NFC Tag-Emulator: Power-Free Operation Sets New Standard Existing NFC tag emulators like Flipper Zero, ChameleonUltra/Mini, Amiibo Emulator, PN532Killer, and Proxmark3 rely on USB or battery power, limiting their portability and usability. In contrast, the Tag-Emulator draws power directly from the NFC reader's field—just like a passive RFID tag—enabling seamless integration with standard NFC infrastructure. Leveraging the ultra-low-power CW32L010 MCU (3.5mA @ 27.12MHz), this design operates within the 4.5mA power budget supplied by typical NFC readers (3.3V/15mW). The emulator currently supports ISO/IEC 15693 emulation with full compatibility for read/write operations, and ISO/IEC 14443A support is in development.

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This breakthrough enables applications requiring true RFID tag behavior, such as access control systems, ticketing, and industrial automation, without external power dependencies. The design demonstrates that passive NFC emulation is feasible even with feature-rich MCUs, opening new possibilities for stealthy, maintenance-free IoT nodes and security research tools.