Another of airports use. Waco TX uses to weigh garbage trucks before dumping in a landfill and no more lines. With railroad cars the readers are in the stations and along the track. It is called Intellitag 500. Tags can be rewritted over 100,000 times at extended rante at rates of oer 50 tags per second.
Skiers have tags worn to get on the lift quickly with no wait.
In the Boston Marithon they put the tiny rice sized ones in the runners laces to see which feet crossed the finish line first. Thats all I have this time.