Jeez, and I though my humorously fanciful lead in would soften the story. LOL!
I see it as a turn it on or keep it off tool that would be traffic dependent, and server dependent as well.
New server, called in sick server; it could help.
2-3 deep backing up at the bar? Couldn't hurt.
If it COULD read who was becoming 'over-served' it might be a more credible cut-off coming from a machine. Liability of a bar for DUI might be an issue that drives that function.
Anyway, doesn't sound like it's arriving down under any time soon.