Next Gen iPod Patent: the touch is on the back

The next Gen ipod patent says that the 'touch' and the 'screen' don't have to go together. The next gen iPod will have a normal display covering the front, and a separate touch surface on the back.

The front screen of the iPod or iphone shows everything, but it is similar to your iPod's screen today. When you touch the backside however, transparent 'ghost' controls appear on the front. You'd then use your finger on the backside of the device to navigate your way through the transparent controls up front. The key to the equation is force sensitivity. As you run your finger along the backside, the cursor hovers, but when you press harder, you can click on things.

I'm curious how this will feel in my hand, but I'm sure that Apple will not make it uncomfortable.

I'm looking forward to this!!!