You want to enjoy biking, skating or some other sport, but other people are blocking your way?* Tell them to move politely by tapping once your phone. (It will play sound of bike bell)* If they still don't move, tap twice ;) (It will play sound of braking hard)From my experience it helps moving pedestrians from bike and inline skating track.Enjoy in your sport, leave others to enjoy .Hope this helps you in preventing accidents.