Years ago, the Showcase?s combination of opaque rubber and clear hard plastic shells was more than a novelty: it was an attractive and unique way to frame the front and back of an iPod while protecting its body from scratches. But as iPods and iPhones have become thinner, and elements such as screens, cameras and antennas have come to occupy more of their faces and backs, framing them with opaque parts has become more of a challenge, while presenting?