Clairvoyance / communications device

There are many times when you want to indicate your presence to your loved ones living far away, without actually speaking, you would want them to know that you are thinking about them.
Can long distance communication happen by just plain thought and simple action?
This is the question I have tried to approach with CLAIRVOYANCE .
In that situation you pick up a crystal ball, which in turn senses your touch transmits a signal to another ball,very far away. So the other changes color and warms up, indicating your presence. He/she then touches their ball and yours heats/lights up in turn. Human warmth and thought are transmitted in this way.