Self‐Powered Luminescent Barcode Recognition System Based on Triboelectric‐Induced Electroluminescence

Information identification systems hold critical significance in personal authentication and Internet of Things (IoT) applications. This paper proposes a novel self‐powered luminescent barcode system based on sliding‐mode triboelectric‐induced electroluminescence, where mechanical motion is directly converted into visual light signals through in situ triboelectrification processes. The system achieves controllable modulation of emission intensity by leveraging material‐dependent triboelectric polarization differences. After incorporating lead zirconate titanate with a high dielectric constant to enhance interfacial electric fields, the system demonstrates significantly improved luminescence intensity, enabling effective identification of dynamic optical patterns generated by random sliding motions. A barcode recognition system constructed on the C# platform enables real‐time translation of optical information into digital codes, achieving rapid response within 0.2 s through optimized recognition algorithms. This work enables direct decoding of barcode optical signals via WeChat Mini Programs on smartphones, eliminating the reliance on specialized decoding equipment. The developed barcode card exhibits high concealment, electromagnetic interference resistance, and cycling stability exceeding 20 000 cycles. With self‐powered luminescent characteristics, non‐invasive recognition mode, and reusability advantages, this system presents promising potential for IoT device authentication and personal information security applications.