If you are looking for a great adrenaline rush during your next vacation — the type that makes your stomach feel like it’s hitting the floor — you can either ride the tallest and scariest roller coaster you can find, face your fears with a trip into a deep dark cave filled with bats or accidentally lose your smartphone. That horrid feeling of “Oh NO, where is it?” can make your stomach churn and your head fill with worry. After all, that little hand-held computer holds tons of personal info, and the last thing you need is to have your…