2 pin connections to control the key

[caligari]

As the label is misindicated on the schematic, my first guess was that was a non-corrected error. Then, i checked on the NRF datasheet, in case of the tri-state of the µC could serve as "debounce hack contraption", but, clearly, i have no better idea.

Debounce could be a nice one, but i doubt it.

If the button has 2 positions (SPDP) to indicate fully pressed and fully released, it's perfect to debounce by software and manage it with interruptions (power saving). I don't have pinetime-devkit0 at the moment... Is the button a SPDP?