i can see how it would be useful, especially in work related sectors like taxi-services, hospitals etc. i would always dread if myself and my girl-friend had it that she would ask me why i had turned it off at such a time and grow suspicious...not that i am cheating on her or that i have a girlfriend...but its the sort of present that if i got it from one, i would break accidentally. great ap for parents and kids though. not great for cool kids.