If there’s an activity that could unequivocally be described as low-tech, meditation is it. All it consists of, after all, is sitting quietly as you clear your mind and concentrate on nothingness. Believe it or not, however, your Apple tech can help you on your journey toward nothingness—or “mindfulness” as practitioners prefer to call it. But before we detail the specific Mac- and iPod-based meditation tools, here’s a short introduction to the concepts involved.