this. A company in my town has an RFID (active and passive) material tracking system for large construction projects that does some pretty cool stuff. Imagine having a $10b construction site, thousands of parts, materials, and pieces of equipment laying around in a stock yard, and being able to know where every single one is, know if someone takes the wrong part out of the yard, know if someone takes a part to an area of the jobsite it doesn't need to be in, etc... Snowfall covered your entire stock yard? no problem, still works.