(Given "Gross features such as color, odor, and texture are of limited help as they can be quite variable and therefore are less reliable.")
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
(Given "Gross features such as color, odor, and texture are of limited help as they can be quite variable and therefore are less reliable.")