Earlier quoted context omitted.
It's my backup key for my garage and my office door. I also use the universal remote to change TVs in public spaces occasionally. It's a chunker, so it's not a pocket carry, but I keep it in my backpack. I recently discovered this, which I want to try: https://electroniccats.com/store/flipper-add-on-magspoof/
What kind of garage opener do you have? I thought the Flipper zero won't provide that functionality unless you flash the firmware.
If that's not the case I really need to do this because having it handle my tv's, ceiling fans, and garage door would be a nice trick.