A lot of things I suppose. My guess would be testing, a track record from use in other disciplines I would guess, insurance. Just a few things I can think of. I, by no means , am an authority. So I'm just guessing. My experience has not been in the realm of trying to get some tool or technique approved for a comp. I have several tool prototypes that I've been working on for at least 4 yrs to get to the point of production. There are countless things to consider for that to happen. Mostly financial things. If and when it happens ,I don't expect to make much. But I do see the need for what I have come up with. So I press on.