Is the signature track on coursera useful for MS admissions? I read through the forum and the opinion seems to be that doing a MOOC is equivalent of reading a book on that subject. This is largely because of that you can cheat through a MOOC. 

So what if I join a signature track on a MOOC such as the one of Coursera ? I haven't ever tried a signature track out, but they capture your photo and recognize the way you write to ascertain if you have genuinely gone through the work or not. 

Even american council of education is acknowledging this ....

How is this a duplicate of that question :|
At best, MOOC's are going to be viewed just like any other course on your transcript—they're not going to make it or break it anymore than any other course that you can take. However, as many people have pointed out, MOOC's are also viewed with substantial suspicion, in part because of their low completion rate and because of the difficulties with quality assurance. 

So I would ultimately say that a MOOC probably has little or no advantage over a comparable course offered at your university. If it's something that is both highly relevant and not available at your university, that's another story—but then that should be clearly stated in your application as well!