Supposed to be able to install on any piano, and remove without any sort of permanent damage or anything, can see on this page https://dgdevices.com/gallery

Same. I found this because I got my piano tuned yesterday and it bothers me it can't sound that wonderful every day - bothered me even more that it did not seem to exist as a commercial project or DIY solution. I'm in KC so might try to connect, maybe even get it for my Kawai!