Mark Arcenal‘s résumé points to an array of professional titles – founder of web imprint and retailer Fatlace, founder and creative director of Illest, Global Digital Lead at NSW, and a slew of various art directing positions at companies like GAP and Ogilvy to name a few. In addition to continuing his efforts with Fatlace and Illest, the California native also heads his own design and advertising studio that has worked closely with brands like adidas, G-Shock, Microsoft’s Xbox and so much more. Having linked with the HYPEBEAST team over a year ago for our signature Essentials series viewable here, Arcenal returns to our viral pages to take part in our tech-related mobile device must-haves. Constantly on the road, Arcenal’s iPhone 4S contains a long list of traveling apps that allow him to check on flights, book hotels and even keep an eye on his stores when he’s out-of-town. We also get a very sneak preview of the car enthusiast’s own app currently in development: Carfiend.