For automated UNLOCK. They’re great for automated LOCK, which is how I use mine. Because humans can always unlock a door that happened to lock due to a bad reading.
For your walk the dog scenario, you could provide a keyfob w/buttons to your walker. That fob would be able to open/unlock if Dog has left and then returned AND the fob is present AND the human presses one or more buttons on the fob.
That would be secure.
Everything else is not, because radios are subject to interference.
I think that’s @JDRoberts point. If you want security, you need to verify that the event you think you see is real. Having a real human press a button is 100% accurate. Everything else isn’t.