Is it possible for a Bluetooth device/button to wake up an Android phone and take a picture (hands free)?

Long story short, I am taking daily progress pictures and I am trying to take a picture with the phone without touching it or using a timer etc. Totally hands free. The phone is a spare Samsung note 10+ mounted to the bathroom mirror and permanently connected with the back camera facing forward. Touching the phone isn't suitable because it's facing the wall and movement has the chance of bumping the position slightly (not ideal). After experimenting with Bixby many thanks to the comment by @Morrison Chang , I found it does work hands-free suitably for my partner and myself, however listening to my partner trying to tell the wall to take a photo in a slow robotic voice is not optimal. So, the question remains, Can a Bluetooth attached button wake a phone and trigger a picture to be taken? ***Note**: I am a career programmer so writing a simple app isn't out of the equation if need be.*