The one place I can think of that this might be useful, is where you already use a remote control and you're doing other things e.g., a geo-fenced trigger to op

The one place I can think of that this might be useful, is where you already use a remote control and you're doing other things e.g., a geo-fenced trigger to open/close an automatic garage door/automatic gate. That I could probably use - we have a ~6m wide rolling gate and are considering motorising it, as opening a gate in the rain in Thailand is basically like going diving without a wet-suit. However, even that would need some decent consideration, and its entirely possible the standard remote system is more fool-proof.