I wonder if anyone can track down a working email for Benjamin Rossen. All of his old domains seem to be defunct, which makes it tricky. He’d be the best person to ask.
As I understand it, the DataStealth keyboard was discontinued, to the benefit of its successor the Flinder keyboard. There was info about that one on the domain
www.flinder.com that I could find on the Internet Archive, but that one is also defunct now.
The web site
www.benjaminrossen.com is up, but not everything works. You can navigate through the "site map" which is actually a list of pages that once existed...
There is interesting info about the development of the Datastealth and the successor, the Flinder keyboard starting at
http://www.benjaminrossen.com/kbd/html/keyboard-01.htmThese pages seems to contain practically the same info as was on the old sites, although edited. It is more of a history of his work than an attempt to market the designs to investors.
Navigate to the next page through the links at the bottom - not the arrows.
I also found a page there called
Alternative keyboards available today that show some interesting keyboards at the bottom that I have not seen before.
I was hoping to find research paper from some university, but so far no luck.