Lost your phone lately? You're not alone. In 2011 a phone-finder app company called Lookout located 9 million misplaced smartphones worldwide. That's about one device every 3.5 seconds -- and that's just one company.

A lost or stolen phone could cost you more than a replacement fee, however. If you bank online or shop with your smartphone, or use it for business, then a misplaced mobile becomes a potential data breach.