My point is that Square only makes sense for a merchant who: 1. Already has an iPhone or Android; and 2. Takes the order him or herself. Reason #2 alone alrea

My point is that Square only makes sense for a merchant who: 1. Already has an iPhone or Android; and 2. Takes the order him or herself. Reason #2 alone already excludes the huge majority of businesses. Inside that minority, reason #1 excludes small-size vendors who cannot afford a smart-phone. Sure, Square has its place as a niche, but it's hardly revolutionary.