ZaiNar

ZaiNar provides a location tracking platform that functions as a foundational layer for Physical AI, enabling systems to determine the precise location of radio-emitting devices. The company was founded in 2016 or 2017 by Daniel Jacker and Philip Kratz and is headquartered in Belmont, California. Jacker serves as the CEO, while Kratz is the CTO. After operating in stealth mode for nine years, ZaiNar emerged in February 2026, announcing it had raised over $100 million in funding and achieved a valuation exceeding $1 billion. Notable investors include Steve Jurvetson, Jerry Yang, Tom Gruber, and Jaan Tallinn.

ZaiNar's core technology leverages patented advancements in signal processing and sub-nanosecond time synchronization across wireless networks. This allows the platform to transform existing Wi-Fi and 5G infrastructure into a spatial sensing system without needing new hardware, software, or impacting device battery life. The system analyzes radio signals already being emitted by devices to calculate their 3D position with sub-meter accuracy, functioning indoors, outdoors, and in dense urban environments where GPS/GNSS signals are unreliable. The technology is protocol-agnostic, working across various wireless standards.

The business model is centered on providing this location data to enterprise clients across multiple sectors. The company serves industries such as healthcare, for tracking medical devices; construction, for monitoring worker location to enhance safety and efficiency; and smart cities and industrial applications. ZaiNar's solution also has applications in logistics for supply chain optimization and in defense as a terrestrial backup to GPS that is resilient to jamming and spoofing. The company generates a real-time map of device locations, which is accessible to clients through an API for integration into their existing systems. As of early 2026, ZaiNar had secured over $450 million in contracts and memoranda of understanding and is commercially deployed on multiple continents.

Keywords: positioning navigation timing, PNT, 3D positioning, GPS alternative, radio frequency tracking, asset tracking, indoor location, signal processing, time synchronization, physical AI, IoT location, smart supply chain, wireless mesh network, location data, sub-meter accuracy, GPS-denied environments, real-time location system, RTLS, 5G sensing, WiFi sensing, network time distribution, spatial awareness, autonomous operations, industrial IoT, smart construction