Digital systems depend on identity, but the physical world largely does not. This article explains why physical identity infrastructure is emerging as a foundational layer for machines, automation systems, and AI platforms that need to determine what physical objects are, whether they are trusted, and how they connect to digital systems.

Physical AI refers to infrastructure that allows machines to reliably identify, interpret, and interact with physical objects. This article explains how machine vision, identity infrastructure, machine-readable environments, and system integration work together to connect physical assets with digital systems and enable reliable automation.