At the heart of XeThru technology is an electromagnetic time of flight technique

Developed to measure distance, this technique was first tested in 1904 as a ship detection system to avoid collisions at sea. Basically, if a radio wave is emitted in a certain direction and it hits an object such as a ship at sea, the wave will reflect back to the position where it was emitted. This works just like an echo when you shout at a large distant wall. Just as with the echo, the time from when the radio wave was emitted until the time it returns can be directly translated into a distance to the object. Today this technology is commonly known as radar, and the first operational systems were five units called Chain Home in the UK for detection and tracking of aircrafts.


Radar is an acronym for RAdio Detection And Ranging and is often perceived as large high-power systems detecting airplanes and ships. XeThru technology performs far beyond traditional radar systems when it comes to compact size, power consumption, accuracy, speed and low emissions. In fact, XeThru emits less energy than is allowed as unintentional radiation from your TV or vacuum cleaner (FCC part15).

Combining all traditional sensor functions into one

A vast number of sensors and sensor technologies exist today, the most common being infrared (IR), capacitive, ultrasonic, and microwaves. Due to the strengths and weaknesses of different technologies, sensors are typically designed for only one task, such as detecting presence, motion, speed or distance. This is typically at one defined range or at very short range, or only on moving or static objects, and so forth. In applications where you want to combine features from several sensor technologies and/or hide your sensor due to security or other design constraints, your options are limited. This is why we set out to develop our XeThru technology and gave it the abilities it has today. XeThru is based on a single chip implementation of an Impulse Radar system and features the following abilities:


XeThru is able to measure its distance from a person, which provides a completely new set of possibilities. Imagine a simple application like sensor behind a painting in an art exhibition or even in the wall seeing through everything and detecting a person as he approaches. When he enters the viewing zone, he is welcomed and told information about the painting. If he gets too close, the system warns him to keep his distance, and sets off an alarm if he does not listen. When viewers leave the viewing zone, they are wished a pleasant stay at the gallery. Analogous ideas could be applied in settings from home automation to interactive commercial screens.

Xethru Distance illustration
Breathing Pattern

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