I think the question was "Is this true?" (that someone with no background in fnance can go for CFA).
If that was the question, the answer is yes, you can do CFA exams without any background, though you can't actually get the Charter at the end without enough finance related work experience.
For someone in your situation, the prime value of the CFA is for the kinds of questions that go "I see you are a great computer guy, so what do you know about finance?" The CFA exams tell your interviewers that you know at least the CFA material required to pass the exams (or did at exam time, I shudder to think of the stuff I've already forgotten).
For someone with your background, there are firms that figure they can teach you the finance stuff you need anyway. CFA covers a lot of different aspects of finance. A regular job will usually only focus in on one or two of the areas that CFA materials cover, so often times managements of firms - especially hedge funds - may figure that they can teach you the finance you'll need to do the specific kind of work that they want you to do, as long as you're generally smart. This is what I've been told. I'm not selling computer skills myself, but I keep hearing that "if you were trying to sell computer skills, you wouldn't necessarily have to worry about how much finance you know."
Hope this helps.