If you have friends like mine, letting them check out one photo on your phone means they're going to check out all of the photos on your phone. Before you realize what they're doing, it's too late, and they're sending out perverted emails to your coworkers, making you look like a newb at Candy Crush Saga, and viewing your Snapchats for you.
Thankfully, developer elesbb over on XDA realized this was an issue and created an app to prevent it called ScreenLock, which definitely lives up to its name.
When activated, it disables all touch input and button presses. So when you show a friend a... more