@Sean There are apps that track your position and update this information online. A very popular one is Endomondo, a sports activity tracker. When someone is doing an activity his/her Endomondo contacts can see where that person is in real time. Similar thing is available in Strava, however in this case it is a premium (paid) feature.
I’m a Starva user and my first attempt to make my own module will be to enable showing my position on the mirror to my wife, who is always calling when I’m commuting back from work on my bike and asking me about my arrival time… So I strongly support any advancement in other users’ efforts in this respect.