Taking into account the territoriality aspect of the research material, this idea works by trying to keep someone from approaching the building.
Their distance could be measured using Ultrasounds transducers, like the ones used in car parking sensors. This information would be relayed to the necessary components and cause floodlights to eliminate the building. The closer you get to the building the brighter the lights.
Their distance could be measured using Ultrasounds transducers, like the ones used in car parking sensors. This information would be relayed to the necessary components and cause floodlights to eliminate the building. The closer you get to the building the brighter the lights.