Hiding behind a stupid app that lets you see pictures of the people around you doesn't solve the problem of social interaction in any way, because you are still separated from them until you walk up and say Hi. What the app really does is make you complacent in your comfort zone.
It's kind of funny that the author talks about proximity, since proximity truly benefits the most of having real people around you and interacting with them in the good old fashioned way. Talking to the guys, flirting a bit with the ladies. There is really no need for an additional layer of abstraction (like the Color app).