I am not sure on how much the threat of the min wage going up had anything to do with McDonalds decisions. When I was in Europe the McDonalds had that system before I saw it here in the states. I am not sure how long Europe has had them but def before we did. Scan your own grocery’s has been around a lot longer than the 15 dollar an hour strike BS. Companies are always going to look at ways to increase efficiency and lower labor cost, regardless of min wage.
I agree with all that...
I think the threat of min wage going up as it was proposed, expedited implementation of Mcd's usage of automation. Mcd's has been on a downward spiral for quite some time now, so they need to cut costs anyways. I just read ever since they did away with their big dollar menu they have been struggling. (a few years now)