I. Introduction
With the explosion of hand-held device usage globally, smart phones have made their way into most hands. This trend is expected to continue as devices get cheaper and find more utility in our day to day lives. As of 2011, there were more phones than people in the USA, and internationally, the number of mobile phone subscriptions is an estimated 5.9 billion. Though such devices are extremely useful and even indispensable for many, it is this very dependence that is a major cause of pedestrian distraction, and possible injury. From here on-wards, we shall make use of the term cellphone as a placeholder for any hand-held multimedia device that a pedestrian may interact with.