You can already use it with a USB A-to-C adapter. With that, it works in a computer with USB-C only right out of the box.
As for mobile devices, it's more complicated. There is actually a mobile app for Android that works, but it doesn't install with the latest Android release. If you have an older releasez it'll work fine, but I haven't been able to get it to compile (I inherited this project), so that's pretty much dead in the water for the moment (for the latest version of Android).
If you know any Android devs who would be willing to lemd a hand, it'd probably be something that is easy for them to fix. I could really use the help. It's an open source project, not a Dr. Hax for-profit corporation, so there's no budget to hire a dev or consultant.
Also, yes, I am planning a version with on-board USB-C. But 🤫 I haven't officially announced it yet. In fact, the final parts for the prototype just arrived earlier today!