I don't post here that much but I have a question. I have been backed off from several stores here on the east coast. I have since returned with only a few of them backing me off again. They all say I can flat bet, but not banned permanently. My question is if I don't show them ID, what measures can they take if I keep going back? I know I can be trespassed, but if they don't know who I am, how can they give me something in writing to trespass me?