The RFID & NFC Transponder Coil is a precision-engineered antenna component designed for wireless data transmission and energy harvesting in 13.56 MHz systems, enabling contactless communication in RFID tags, NFC-enabled devices (e.g., payment cards, smartphones), and IoT sensors. Featuring ultra-thin, flexible layouts with optimized inductance (µH range) and high Q factor, it ensures reliable signal coupling and minimal power loss, even in compact or metal-proximity environments. Robust materials (e.g., etched copper, ferrite-enhanced substrates) enhance durability and resistance to interference, while compliance with ISO/IEC standards (14443, 15693) guarantees seamless integration into access control, inventory tracking, and secure transaction systems.