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Project Soli

Topics Covered:

  1. Awareness in the fields of IT, Space, Computers, robotics, nano-technology, bio-technology and issues relating to intellectual property rights.


Project Soli


What to study?

For Prelims and Mains: Key features and significance of the project.


Context: Recently launched Google Pixel 4 uses a radar-based Soli chip to introduce Motion Sense, a feature that provides similar touchless gesture-based controls.


What is Project Soli?

Google announced Project Soli in 2015. Since then, Google’s ATAP (Advanced Technology and Projects) division has been developing the technology, which can be used in wearables, phones, computers, cars and IoT devices.


What is Google’s Soli chip?

Google’s Soli is a purpose-built chip to track your motion on a microscopic scale.

It uses miniature radar for real-time motion tracking of the human hand; it’s able to track sub-millimetre motion at high speeds with great accuracy.



  • The Soli chip measures just 8mm x 10mm and it incorporates the sensor and antenna array into a single device, meaning it can be used in even the smallest wearables.
  • It has no moving parts, consumes very little energy, isn’t affected by light conditions and works through most materials making it a pretty exciting bit of technology.


How does Google’s Soli chip work?

The Google Soli chip uses radar, so it works by emitting electromagnetic waves with objects within the beam reflecting information back to the antenna.

Information gathered from the reflected signal – things like time delay or frequency changes – give the device information about the interaction. 


Why does India not allow the Soli chip?

The Soli radar chip works on the 60 GHz spectrum frequency as it has the least interference for the kind of minute movements Google wants to track. However, the 60 GHz spectrum is not commercially usable in India.

The 60 GHz band is also known as V-band or WiGig band (Wi-Fi at 60 GHz) using IEEE 802.11ad protocol.


Sources: the Hindu.