Telecom-based identity is re-emerging as a foundational layer in digital identity ecosystems. Prove’s expansion reflects growing demand for passive, device-linked identity signals as alternatives to document-based verification. The company’s Identity Graph and authentication stack align with broader industry moves toward signal-based, continuous identity verification. Similar investments across identity vendors (e.g., mobile ID, SIM-based authentication, and telco partnerships) indicate a shift toward network-layer identity infrastructure.