I first encountered this method of zooming in and out in an Android browser called xScope a few years back. The developer called it "pin zoom," and it was one o

I first encountered this method of zooming in and out in an Android browser called xScope a few years back. The developer called it "pin zoom," and it was one of the major features he touted. Incidentally, xScope was also the first multi-touch browser for Android. I'm not sure what that dev is up to now, but I like to give him props when this UI technique comes up.