I have a parking lot in front of a University building, with the area of aproximatly 100x50 meters. Are there some kind of sensors that could help me to determine which parking places are taken and which are available (with no car on it). I need my computer system to be able to collect the information of which area of that parking lot is empty. I am not allowed to use sensors above each parking place, or on it. It should be either AI determining which places are available or some kind of sensors situated around the perimeter of the parking lot. Could you advise what kind of equipment could be used here? thanks for your help! And My apologies for my english!