The new feature requires special hardware components on the smartphone, so it is unknown whether it will be available on current Pixel models or only future models.
A similar feature has already been implemented in iOS 15 and later, where the Always-on Processor chip is used to detect turned off iPhones. In addition, Google is developing a Geolocation Networking system that will connect Android smartphones to the network via Wi-Fi and Bluetooth to find lost devices without internet or power.
Source: Ferra

I am a professional journalist and content creator with extensive experience writing for news websites. I currently work as an author at Gadget Onus, where I specialize in covering hot news topics. My written pieces have been published on some of the biggest media outlets around the world, including The Guardian and BBC News.