Which operating systems other than Win10 do we know track you by default?
When you turn on Location in your Android phone, every time there is a disclaimer (unless you turn the notice off). It says that Google will collect your location data. If you decline, your phone's GPS is useless. So, in order to utilize the hardware you bought, you are forced to give up your privacy.
This is the definition of "tracked by default". Is there any hardware feature that Windows does not allow users to access if you turn off all the tracking?
But GPS still works. GPS even works with the WiFi and mobile radios turned off. GPS works without the Google Apps installed, and without the WiFi location being enabled.
Edit: I read a bit about this. There is something called Google location history. It's on by default and tracks and reports your location to Google. You can turn it off (it's a bit non-obvious but not very much so). The wording is "Places you go with your devices will stop being added to your Location History map". So there, "tracked by default".
The data collection is active only in 'High accuracy' and 'Battery saving' modes. Both these modes are services, the phone asks Google servers "I see wifi with SSID ABC and MAC 0:1:2:3:4:5, where am I?" or "I see celltower of provider 0123, with id 456, where am I?".
In 'Device only' mode, your location is determined purely by the device hardware. If anyone, it's Qualcomm who knows about you, due to AGPS request.
Then there is a separate service, Location History, that can be turned off.
Yes, exactly as I mentioned. And it is on by default.
To use ChromeOS you must sign in with your Google account. Although you can use it as a "guest", this will limit what you can do.
Once you are signed-in, Google knows which web apps you use, including when and how often you use them. It knows (and records) the websites you visit (unless you browse constantly in private mode). It even knows when you print to your desktop printer because print jobs are routed through Google's cloud print service first.
To repeat: none of this is anonymous since you must be signed into use the OS properly. A Google account = your name, date-of-birth, gender, location and (optional) phone number. In other words, some of your most private and personal details.
In my view, this all amounts to a privacy-invasive OS that tracks you by default.
Source: Little Snitch and the log files on my OS X systems.