Google Wifi is the like of Eero and Luma — two WiFi router mesh systems that provide an even coverage thanks to good looking modules placed around the space. Eero named their approach clearly after the tech behind it: mesh networking, while Luma markets it as "Luma Surround". Google advertises their product as a “mesh technology” as well, supported by “modular” bases that you can alter by adding or moving modules up to your network requirements.
NetSpot will soon provide a real-life comparison of all these technologies in the same building. That's where the titans will be able to prove who truly is the most powerful wireless coverage provider.
All the projects described above work in a similar way, starting with a WiFi router connected to your modem and expanding the network by adding modules to it. As for WiFi network security concerns, all new modules added to the network will have to be “trusted” modules, signed by the same manufacturer.
Don't forget that mesh networks are not a panacea and may result in some pricey investments. Our first tests show these devices are prone to overheating, and stay very warm all the time when they are plugged in. While you definitely are getting a better coverage with 3 Eero's or Google Wifi modules, sometimes these overly smart technologies may play a bad trick, severely lowering your coverage quality when older and slower devices are connected. We still have to test and see how the new concept compares.
Google Wifi cares about the looks as well. As we mentioned before, the routers are neat and good-looking, having a shape of a small white cylinder, unlike a regular antenna-laden Internet box. This way you can incorporate it into your living or working space without hiding it which gives you more choices of where to put this thing which results in a better connection.