It's a patent application not an application for a warrant. I think that this is nothing more than a protective move so that they don't have to pay a patent troll if they want to do whatever with the capability or offer it as a service.
The general concept has been implementable and implemented on any number of devices for some time now. I think that our personal privacy is largely a long gone historical curiosity. If someone doesn't like the fact that this kind of thing can be and is being done then they could start by smashing their cell phone even if it's a cheap non-smart cell phone. Even so its probably a futile gesture because it's not likely to improve their privacy much. Our government can turn an incredible magnifying glass on any one of us anytime that it wants to. If you pee in the woods then our government has satellites that can tell if you have a porn-star shave and crabs and they can get information on who did the shaving and who treated you for the crabs.