Being at home when someone comes is one thing. The earlier the warning the better.
Being away you can do interesting things. I have a couple of connected speaker systems and lights in Home Assistant. I’ve thought about triggering every speaker system, at full volume, with different tracks, combined with flashing every light a different color when I detect an intruder. I figure the sound of an alarm siren is pretty much easy to ignore these days, but something like this is bound to grab attention or at least freak out the guys a bit…