In a clever campaign in anticipation of the 2014 Olympics, Russian subways have begun accepting squats – yes, like squats at the gym – as a genuine form of payment. The machine, which presumably uses a Kinect, can tell if you’re cheating and requires 30 proper squats before letting you through. It’s another example of innovative, out-of-home interactive experiences engaging with different populations, even if it’s for a government-sponsored program, and plays into the larger health and fitness trend of keeping people fit.