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I don't think battery usage is the concern, because the alert still triggers - you just have to approve it. By the time you get the alert to approve it, the bluetooth or wifi or location services have already been running (using battery) and triggered the action

This can already be done in the "home automation" side of the shortcuts / home app. My own house lights up whenever my wife or I come home after dark and goes dark again when we leave.

> Imagine coming home and all your blinds open automatically, lights turn on etc.

Try home assistant. Open source. Integrates with nearly everything, including apple homekit stuff.