R4 Incorporated is a high-tech sensor company that helps save lives. Founded in 2006 by a group of veterans responding to the needs of Warfighters, the company has since evolved to include a much wider customer base. The common goal has always been to save lives, and R4 will continue to make that effort with teams involved in search and rescue, first response, and public safety. To that end, we apply a unique perspective in developing innovative products that ultimately ensure success through forward thinking and rapid response.


The R4 Emergency Operations Center (EOC) is a unique product support concept that provides a centralized focus of information and support to users of R4 remote-sensors. Users of R4 products can reach-back 24/7 from any location in the world and receive Emergency/Disaster Intelligence, Product Service Support or Operational Support. Furthermore, the R4 EOC is the command center for the deployment, employment & re-deployment of R4’s volunteer global Search & Research teams located around the world.

Origin of FINDER

Leveraging space-age technology

The original technology is used by NASA to detect and measure motion of spacecraft, gravity fields, and deep space navigation. NASA’s Jet Propulsion Laboratory (JPL), California Institute of Technology (Caltech), and the Department of Homeland Security’s Science and Technology Directorate (DHS-S&T) all collaborated to adapt this tech into FINDER: Finding Individuals for Disaster Emergency Response. The idea was to save lives that are trapped in rubble from natural disasters, catastrophic accidents, and terrorist acts of mass destruction. However, there are additional life-saving scenarios that can benefit from this technology, and R4 FINDER is now a fully-licensed and commercialized product that uses FINDER technology.

How it Works

The sensor detects human beings, hidden from view by enclosed walls or trapped in rubble, by their heartbeats and breathing patterns. Low-powered microwaves, about 1/1000th of the power generated in a cell phone, are directed towards an intended search area. The microwaves bounce or reflect off objects (enclosed areas, walls, or rubble) yielding data from vibrations. This captured information is then analyzed by software algorithms, compares the signal-to-noise ratio of human heartbeats against all other background noise, and provides a final output on whether human life has been located. The unique thing about a human heartbeat is that the rhythmic beat changes with each breath.


The R4 FINDER Remote-Sensing Devices


FINDER in the News