Funding through indiegogo.
https://www.indiegogo.com/en/projects/momentum-mouse/momentum-mouse-go?brid=YWdncwHRN0tKc57Og67lssHdAu5l
The first question that came to mind wasn't whether it works—it was what existing habit it's replacing.
People already reach for both a mouse and a phone hundreds of times a day. If Momentum can eliminate one of those context switches consistently, that's a much stronger reason to adopt it than simply combining two devices into one.