On the way just past Mary Magdalena church, we noticed a border police patrol stopping all cars as we went by. We were recognized and let through. Two more patrols were on the way east towards the wall. Not many people were crossing the wall near the gas station and near the university the gate was closed. The guard said the border police make him close it, and if he didn't, they would confiscate his I.D. Not many transits by the gas station.There was a strange feeling in not knowing where the checkpoints would be located. We tried to find them but all border police soldiers in the area kept moving to different places.