Cyber-physical ad: an audience-aware signage sensing and interacting system based on internet of things technologies: demo abstract. - Lien-Wu Chen; Chi-Ren Chen; Yung-En Li (IPSN, 2017)

VIPS: A video-based indoor positioning system with centimeter-grade accuracy for the IoT. - Lien-Wu Chen; Chi-Ren Chen; Da-En Chen (PerCom Workshops, 2017)

Centimeter-Level Indoor Positioning With Facing Direction Detection for Microlocation-Aware Services. - Lien-Wu Chen; Chi-Ren Chen (IEEE Trans. Syst. Man Cybern. Syst., 2024)