Incognito modes generally do not prevent the websites you visit from seeing your location, via your IP address, or stop your internet service provider from logging your activities. As long as your IP address is visible, the Mozilla Foundation says your identity and activity remain fully exposed to search engines and third parties - think advertisers - regardless of what mode you’re browsing in.
So, does this mean that you can be tracked via your IP address? Is the IP address not a dynamic one - ie changing all the time? It seems to me that the IP is the weakest (strongest?!) link in all this.