The Immersion scarf will instantly make you look like Snuffleupagus, wearing what amounts to a long erect snout on your face. The idea is that you will always be able to see those important text messages, even in direct bright sunlight. You could probably also play your PSP, or watch the iPod videos too.
Just understand that the humanity around you will be thoroughly creeped the hell out. Seeing one or two of these snout creatures on a park bench would freak me out and make me run home, where I would try to figure out if I was really in some tripped out David Lynch movie or not.