Physical AI depends on more than cameras and recognition models. It requires an infrastructure capable of assigning identity to physical objects and resolving that identity reliably across environments. This article explains the architectural components required to make machine-readable physical environments possible.

Machine-readable codes created connectivity between physical objects and digital systems, but connectivity alone does not create trust. As Physical AI expands into real-world environments, reliable identity infrastructure becomes essential for verifying authenticity, enabling secure interaction, and ensuring that physical systems can be trusted at scale.