Forget about politics, and all our social and economic challenges for a few moments and take a second to think about all of the places your phone's been.

Restaurants, your bedroom...the bathroom. And then you put it up against your face. Disgusting.

When was the last time you cleaned that thing?

As it turns out when you take it all of those different places, molecules build up on your device and when they're studied, researchers can learn a whole lot about you.

Pieter Dorrestein is a professor at UC San Diego and he studied the molecules on phones to see what they can tell us about people. He recently had a paper published in the Proceedings of the National Academy of Sciences about it.

He recently spoke with Take Two's A Martinez about the topic.

To hear the entire conversation click on the audio embedded at the top of this post.