There’s something touching and heartwarming about Ivan Cash’s quirky video series called “Last Photo”. In this sporadic, ongoing project, the San Francisco-based artist, writer and idea man travels to various U.S. cities and asks random strangers to show him the last photograph on their mobile phone and to describe the circumstances that led to the picture. So far Cash has visited New York City, Los Angeles and San Francisco for the project, and plans to take “Last Photo” to New Orleans, Detroit, Dallas and Nashville .