If it's possible to add the lock to smarthings then you could probably control it with your watch if it's a watch 4 or newer, or you could even get a galaxy smart tag and press the button on that.
Thanks for the reply. I do have a smart tag, and it works. I am trying to figure it out by pressing a button. I no I can start smartthings but I would like it to go strait to the door unlock not smarthings then the lock. Do it without looking at watch.