Ok.
> what I meant with hackable is that I've wanted an e-paper device which I could run my own code on, without having to look for security holes in the software running on it.
If your software is closed source, then I don't understand how anyone other than you effectively (or practically) would be able to solve or fix any security holes.
> we're not going to release the gerber files
You're setting up a strawman there. I was not asking for your hardware design or even mentioning it in anyway. I was pointing out that you are contradicting yourself when you say your product is hackable to software developers and then 30s later say that there will be "magic sauce" in software that will be closed.