Allow hardware back button on watchfaces

Currently there’s no back button support for watchfaces. Watchfaces may have their own menu system that controls the appearance and setting of the watchface. Currently a software back button has to be implemented in every screen of that menu system, although a hardware button already exists on all Samsung’s smartwatches.

This was discussed with the Galaxy Watch Designer Development team and they understand the requirement but a watch face is not meant to interact with the hardware.

Samsung Developer Program