Touch and ride with the newest innovation from Google. Photo by yoshinari.

A train arrives at Circular Quay station in Sydney. Photo by Sacha Fernandez.

Waiting in line at a Metro kiosk may soon be obsolete. Photo by Mr. T in DC.

Beautiful and functional, wearable transit cards will eliminate fumbling while boarding buses and metro. Photo via Yanko Design.

Are crowded sidewalks the cause of hostile pedestrians? Photo by Andrea Hj.