Voice-based interfaces provide a friendly human-computer interaction medium in mobile environments, freeing hands and allowing a rich interactivity between human and compact devices.
The interaction medium needs to be an excellent solvent.
Life on Earth, structurally based on carbon, hydrogen, nitrogen, and other elements, uses water as its interaction medium.
Specific atoms have circumscribed functions in modern biology, but, aside from structure and the need for the liquid interaction medium, they may not be fundamental.
Low, with interaction: ; medium, with interaction: ; high, with interaction: ; low, w/o interaction: ; medium, w/o interaction: ; high, w/o interaction:.
The parties are usually honest, whereas the intruder (attacker) controls the interaction medium.
The working and interaction medium will evolve to digital and virtual formats.
In the BCK model the parties form the light boxes, whereas the interaction medium forms the dark boxes.
The interaction medium, the dark box, can be split into more fine-grained divisions, and each division would have its interaction protocol and assumptions.
Usually, security protocols are formed of the parties (or players) and the interaction medium they use for communication (or for any other exchange of information).
The Dolev Yao model defines the powers that the attacker has over the interaction medium, like power to delete, change, or insert messages, to and from any other party.
