Billed as a way to safely clean and shield your iPhone or iPod touch screen, Monster's CleanTouch Pen ($25) is a bottle of fluid that promises to control the spread of germs on your device, while adding fingerprint resistance for a brief period of time. The bottle shown here has enough liquid for 100 applications, applied with an oversized marker-like tip, and comes with two microfiber cleaning surfaces -- a cloth and a strip that's built into the back of the bottle.