I am nearing the end of the game and trying to get the PhD achievement, but have just now realized that I need to take pictures of machines as well as splicers. Since that revelation I have used every opportunity to take pictures of Turrets and Security cameras, but there is simply a limited number of them. I can go back to previous levels, but most of them will have been hacked at this point. I was wondering if there was a way to turn hacked machines hostile again so that I can take their picture. Thanks.