Show things on your smartphone while explaining! Bring it fast to the point, without to many useless words! The time you saved spend on doing things you love to do.
No registration needed! No logging on! Just send an SMS or e-mail and start a call.
Show the world around you while explaining things and watch your callers approach! That way you will avoid many misunderstandings. Even if you are not there you will properly understand the situation and make right decisions.