If those embarrassing late-night texts and selfie outtakes weren't bad enough, there's something else on your phone that's guaranteed to make you cringe -- your own filth.
Think about how much of your day is spent touching and holding your beloved phone; each time you do, you leave behind a little bit of yourself. Turns out, that sheen from your greasy face and dirty fingers says a lot about you. And not just that you should've washed your hands after eating pizza for lunch.
Scientists have discovered they can learn in-depth lifestyle habits of people just by swabbing their cellphones, like your very own grime profile.
The lotion you rubbed on your face, the coffee you drank that morning, the ingredients in your prescription medication, all make their way from your body to everything you touch. In a recent experiment, scientists were able to create so-called lifestyle sketches of each phone's user based on trace chemicals and microbes.