I wonder why supermarkets are installing more self check outs and fast food places have those tablets to take your order. The ramifications for the increase in minimum wage for fast food workers will become apparent pretty soon.
Actually self checkout is not decreasing staffing levels. Staff is still needed to help customers, deter theft, check memberships. In some stores, theft is offsetting any savings gained from self checkout. It all depends on the type of store.
Self checkout has been around for decades. It's not exactly ubiquitous, now is it?