Trying to find the right sub...hopefully someone here has some ideas: My employer has just started requiring us to pay for parking. We're on a hybrid work schedule, 3 days in the office and 2 days remote. However, due to my job, I have to be in the office at least 4 days out of the week. Here's the question: A "hybrid" parking permit is a lot cheaper than a full time permit, but only allows parking 3 days a week. We have parking enforcement cars that come around with those electronic plate readers. They don't come out every day, but there's no set schedule that I can determine (probably just whenever someone's available to drive the car). Is there a way to build some kind of device so that I know when my car's license plate has been scanned? That way I could potentially get the cheaper permit, know whether my "3 days" have really been accounted for and park at the shopping center down the road for 1 day if necessary.