'mmNorm' detects hidden and invisible objects using millimeter waves similar to Wi-Fi

A research team at Massachusetts Institute of Technology (MIT) has developed a technology called 'mmNorm' that uses millimeter waves similar to Wi-Fi to detect the contents of invisible boxes. There have been attempts to use millimeter waves to search for invisible places like radar, but they had difficulty detecting small objects. 'mmNorm' has overcome this weakness.
Non-Line-of-Sight 3D Object Reconstruction via mmWave Surface Normal Estimation
(PDF file)
Reflected Wi-Fi signals could enable robots to find and manipulate hidden objects
https://techxplore.com/news/2025-07-wi-fi-enable-robots-hidden.html
You can see what kind of technology mmNorm is by watching the video below.
Reconstructing Hidden Objects with Wireless Signals - YouTube
'mmNorm' is a technology that uses radio signals to reconstruct hidden objects.

You can't know what's inside a closed box.

However, the robot arm determined that there was a spoon in the box.

When I opened the box, there was indeed a spoon inside.

It is clear that the camera was able to read the internal objects in a very three-dimensional way.
This is made possible by a wireless sensor attached to the arm.

The sensor emits a millimeter wave signal similar to Wi-Fi, which bounces off the surface of objects within the area.

From its shape, we can infer what is inside.

It is possible to detect objects other than spoons.

It is expected that this will be useful for confirmation work, etc.

In addition, the mechanism of identifying the location of an object by applying millimeter waves to the surface of the object and receiving the waves reflected by the specular reflection is the same as that of radar that detects the location of an airplane flying through the clouds, but according to the research team, the resolution of small objects was coarse and it was not possible to detect them well. The research team devised a method to detect not only the reflection but also the shape of small objects by estimating 'which direction the surface is facing' when the surface of the object is not facing the antenna and the reflected wave is not received.
in Video, Free Member, Posted by logc_nt