It has been said that communication is only complete when it has been "registered" by the receiver. How often do we communicate with our client or prospective client and what we say makes sense to us, but later we find the receiver did not understand what we meant? We might have used "industry" jargon or abbreviated words, like MLS.  

We are familiar with such terms and converse with other agents those in the business but those outside may be confused with the terms or process that is second nature to us. In those cases, the communication was not complete, as it did not register with the person. 

When I talk face to face with person, one way I can tell if they understand is through their eyes. If you look into the persons eyes, in most cases, you can read if there is understanding of what you said. It is a "feel thing" and as you try it, you will become much better at reading a person. I hope that this technique will help insure your communication registers those to talk with face to face.