I'm trying to determine if an object is being touched. I have a two dimensional array of what we'll call "foo"s called "fooArray." I've tried using NSSet's containsObject, I've tried detecting the entire array and even an individual object. Here's some specifics: Code: //Trying to detect the entire array. if([touches containsObject: fooArray] NSLog(@"True"); //Trying to detect the individual object in the array. if([touches containsObject: [[fooArray objectAtIndex: 0] objectAtIndex: 0]]; NSLog(@"True"); //Trying to detect an independent object outside of the array. if([touches containsObject: fooInstance; NSLog(@"True"); I take it from Apple's reference that containsObject: searches the entire NSSet for the object you specify. Unless I shouldn't be using the "touches" argument supplied with the "touchesBegan" method, then I don't know what else to use. So how do I get it to return "True"?