This may not be the most appropriate post or mobile application but it is a problem that many of us who live, travel and work in the New York City area struggle with almost daily.  Many days I find my self headed for the 2 or 3 train from downtown to mid-town and it would be really nice to relieve myself before the 15 minute subway ride.  Well if you spend much time in NYC you know this can be a challenge, even if you are lucky enough to locate a restroom there is a high probability that the door is probably locked.  Well the problem is being solved by Yojo Mobile and an application called MiZPee.