Imagine you’re floating happily in a hotel pool when the iPhone you left by your beach chair rings. You know it’s an important call, and you want to answer. Maybe someday you can, by simply drawing your index finger across your palm. That’s the idea behind some new research at the Hasso Plattner Institute in Germany, which shows that users familiar with their smartphones can easily reproduce familiar functions with 80 percent accuracy even if they’re not actually holding a phone. READ MORE
