In all honesty, this is probably fairly rare. I'd imagine about as rare as a cooking oven burning out, running out of a specific ingredient, or having your head cook call in sick. Making the system more reliable never hurts, though. A "rocket stick" or tethered phone could tag in when ever there may be issue.

Many things can occur in a restaurant that can cause hiccups, but overall I think the benefits outweigh the cons. A great idea.

My only reservation after looking at this. You could imagine the "POS" acronym changing meaning very quickly in the event of connection failure.

That said, maybe they could eventually integrate gears or some other type of offline storage.