DENVER,Colo.-A man browses his smartphone while riding the light rail on October 14, 2014. Mobile phones have morphed into powerful computers with advanced operating systems. They are our personal digital assistants, our connection to the collective internet-brain, the most commonly seen device on anyone's person. The smartphone has taken the world by storm. No where is this more obvious than on public transportation. Entire trains full of people with neck bent, staring down into their hand held portals to anywhere other than here.