guy, fig uring out how long you will live is a difficult but important question. do you think a cell phone could help you figure it out? >> i'm skeptical, i have to be honest. >> no, i don't think we are there yet. >> our colleague talked to two researchers who have an app that can maybe get us part way there. let's take a look. >> the tell tale lines on our faces give a good indication of our age. but what if the signs of aging could predict how long we are going to live. >> we know people who look younger for their age tend to live longer. >> useing this premise, the doctor partnered with a computer science professor at the university of north carolina. they created a program and website called face my age. >> and so the purpose of the website is to allow people to upload their picture and then allow the algorythms tell them how old their face is. not their chronological age, buffets age and with other -- but face age. it will give information about life span. >> some of my colleagues and i decided to face our ages. we took closeup selfies and uploaded them. >>