Order
In short? Ever had a Foe Glass or Sneakoscope? The charms on them are types of dark detectors. My thesis is taking those charms back to the basic building blocks and weaving them through wards.
The wards themselves will be imbibed with dark detectors and be able to sense malevolence or danger. I'm combining it with the sort of charms on things like vanishing cabinets. Thus when someone who intends to harm the occupants inside attempts to get into the house, they'll be 'vanished' to a remote location for a set period of time to allow those inside to escape.
It sounds a lot crazier when I write it out like that, doesn't it? But I've managed to get the window of vanishing to 45 seconds. But I don't know if its long enough.