Some systems require one object to talk to another as though a remote control. A simple example is a sensor that tells a door to open.
Is this even possible right now? In SL, we'd have scripts either "talk" on a private channel or send email messages to target objects' implicit inboxes. Sansar has a Chat class with a .MesssageScript(Message, ScriptId, Channel) method, but I don't really know how to get a script's ID in the first place. Nor if script messages work throughout the experience or just within an object containing multiple scripts.