Outdoor sculptures have evolved beyond static art forms, increasingly incorporating biometric technology to engage audiences in innovative ways. By integrating sensors, facial recognition, or even heartbeat monitors, these sculptures respond dynamically to human presence and physiological signals. For instance, some installations change color based on viewer proximity, while others alter shapes in sync with collective crowd movements. This fusion of art and biometrics not only enhances interactivity but also sparks conversations about privacy, identity, and the boundaries between technology and creativity. Public spaces become laboratories where art measures and mirrors human behavior, transforming passive observation into participatory experiences. As biometric sculptures grow more sophisticated, they challenge traditional notions of sculpture as permanent, unyielding objects—instead becoming living interfaces between people and their environments.