So what do you do? If someone wants to call me call me at home, no interest in facebook, twitter, messaging apps or any of that crap.Too many "old man yells at cloud" comments here. I guess many of them don't need to keep in communication of friends/family/customers/dispatch while on the road.
And if you have to standby or wait for any moment in time what you gonna do? Twiddle your thumbs? Listen to AM talk radio?
You'll need to have their app running in the background on your phone in order to use the phones sensors (GPS, accelerometer, etc.) to track you.