We're making a hardware device with a reset button that needs to be activated when the device is unpowered.
As such, the button can not be a momentary press but needs to change position before being powered up again. The firmware then knows we have a reset event if the button has changed position (previous position is stored in non-volatile memory).
The challenge is, how do we visually indicate that there is no absolute on/off position and that the user simply has to change the switch from it's current position, whatever that may be.
If I look at something like the silence switch on the side of an iPad it seems implied that north position is on, south position is silenced and it always works the same. What's different about our switch is that sometimes north is on, and sometimes south is on.