Comment No (Score 1) 140
Amazon can't patent "secure credit card transactions", but they can patent a particular way to implement secure credit card transactions. Anybody who does it the same way infringes upon the patent. Those who do it in a substantially different way don't infringe.
("substantially" should be read in a wishy-washy, hand-wavey tone of voice)
("substantially" should be read in a wishy-washy, hand-wavey tone of voice)