My local Kroger variant does that. Or they did, maybe it stopped, now that I think about it. I never saw anyone use it. Intuitively it sounds like it could b

My local Kroger variant does that. Or they did, maybe it stopped, now that I think about it. I never saw anyone use it. Intuitively it sounds like it could be handy, but it seems like in practice everyone just kept on doing things the way they're used to doing it.