Building An Infrared Triplight (and Other Ideas), by ShepherdFarmerGeek
Here’s an idea for how to build a tripline-activated infrared light that will illuminate a path or area when triggered. The person passing through will not know they have triggered it, and an observer with a night vision device will be able to see the person better than with only ambient light and without activating their own infrared source/spotlight. Why set up triplights? The reasons would be to: (a) alert you to the approach of someone at night, (b) to help you identify the approaching person(s), and possibly even (c) to help you target the approaching person if you absolutely, …