Vanadium will make programming apps to run on hardware signing devices almost as easy as programming on your desktop.
https://github.com/LedgerHQ/vanadium
Here are the slides for my talk at nostr:nprofile1qqsd0f68dvf98gvs9am9dp0lu0f4r7xzu2k89rm9tt448axf5tu6wlgphpy4c
/dev/hack/day:
https://docs.google.com/presentation/u/1/d/1WcV0cLzpJHJY5cJbJncAi8EjXoI5HAh2g6-KQNpE6qc
It's a change of paradigm: you will no longer need to wait for the vendor to implement a missing feature before it's possible to use it with your hardware signer. You can build it yourself!