One of the (many) things preventing the iPhone from being useful to scooterists is the capacitive touchscreen, and the fact that most of us are wearing gloves. There have been a few solutions for that, but here's one that you can do yourself, given the right materials. This one just involves sewing some conductive thread into the fingertips of your favorite gloves.

http://www.instructables.com/id/Making-A-Glove-Work-With-A-Touch-Screen/