Here’s an interesting idea. Combine the functionality and ease-of-use of the world’s most annoying puzzle and apply it to a device that is supposed to have mindlessly easy controls. Let’s see what kind of reaction this gets. My guess? The world is about to be littered with broken MP3 players from people smashing their device into the ground in frustration. But what do I know? I never figured out to solve the puzzle in the first place.

“To turn it on you simply need to start playing with the cube and each layer has a different function like play, pause or skip. I assume you need to properly align certain columns or rows to get it to do what you want and of course the only way to turn the player off is to complete the puzzle.”

link - TechEBlog