Maybe not - since you can't see the code you don't know when location info is being transmitted without asking your permission.
Considering that OnStar is apparently being pressured to provide a remote "kill switch" to law enforcement, that printers put hidden codes on each page at the behest of law enforcement etc, would you be troubled if your phone secretly had a feature to pinpoint you within meters without your knowledge, upon the mere request of someone who appears to have the correct law enforcement credentials?
As to already being able to do this via triangulation etc: perhaps, but this would make it even simpler; as I recall in the CDMA world pure network-based location can't get more accurate than 250m and can't do elevation.
Considering that OnStar is apparently being pressured to provide a remote "kill switch" to law enforcement, that printers put hidden codes on each page at the behest of law enforcement etc, would you be troubled if your phone secretly had a feature to pinpoint you within meters without your knowledge, upon the mere request of someone who appears to have the correct law enforcement credentials?
As to already being able to do this via triangulation etc: perhaps, but this would make it even simpler; as I recall in the CDMA world pure network-based location can't get more accurate than 250m and can't do elevation.