Google Project Soli!
Google's upcoming Pixel 4 flagship has been confirmed to feature a new chip called Soli, which is described as motion sending radar. It is essentially a miniature version of the technology used to spot planes. Google say that this chip will be used to get the data about how people move around the phone and controls the phone. With this technology people will be able to do motion gesture's to switch songs or play/pause songs and all.
google is behind the Soli radar chipset, The search engine gaint first announced Project Soli back in 2015 during its I/O Developer Conference. This chip is developed by Google's Advance Technology and Projects (ATAP) group. This Soli chip was under development for five years.This chip can track real time human hand movements and it is also very accurate. The chipset itself measures 8mm x 10mm and features the sensor and antenna. This chip consumes less power and it is not effected by light conditions.