Rewind Pendant: a wearable that captures what you say and hear

I'm curious how this works out in the privacy of people's homes. A lot of couples wind up arguing about who really said what. I wonder how it works out for them when someone produces the recording that settles it for good.

While we would hope that it settles the argument, it doesn't address the emotions. And therefore I suspect that it would just make people's arguments worse.