What is the most modern form of communication?

Depending on the nature of communication you're looking for, reading brainwaves in order to communicate with a computer is probably the most advanced form of communication. Paralyzed people can communicate with a computer using a helmet that reads their brainwaves, allowing them to manipulate a mouse using thoughts. The technology isn't perfect, but does allow rudimentary control such as "up", "down", "left", "right", and "click."