I was in Hawaii on vacation from the 4th of July to the 17th. If you have an Android phone with GPS on, you can access your location history. Now of course, like most technology, this can be really cool, but at the same time, it can be data you can be worried about.
Should you have an easily guessed password or have not enabled two-factor authentication to access your Google stuffs, how easy could a technology savvy bad-guy stalk you? What if it is your child’s phone? What if technology savvy bad-guy is also a pedophile or murderer? The data that tracks you can be helpful, it can even be fun. Google photos creates storyboards with locations and timestamps. It’s a lot of fun. That same data can betray you. It will map where you sleep for 8 hours night after night, letting those who have access to know where you live. It will map where you spend your time from 8am-5pm, calling that place work. Said bad-guy will know when to rob your house, make your life a living hell, and where and when to be to avoid you.
Here is a link to Google’s 2-step verification page. http://www.google.com/landing/2step/. Your data can be worth more than the hassle of the extra steps of logging in.