That's a great question. That is in a sense the challenge that brings us here today.
We have three systems that work perfectly. There are other systems that also work, based on our observations. During our trials, we see that the computer programs work because we have tested them. Yet the people who designed them do not want to submit them and receive certification.
It is kind of a game, I think. Some people have computer programs that might work, but perhaps they are waiting for the deadline to have them certified.