Some stores have a statement in front of their store windows that they reserve the rights to check all customers' bags and some have security guards or staff standing in front of the store to check all bags no matter how big it is. Please give us advice as a customer what is our legal rights under Australian Consumer Law in this kind of situation. Some are very nice while asking to check our bags, but some are really rude. I really don't want them to check my small bag if they are rude. I was told that as a customer, I have the right not to open my bag. If I do so, then it will be stuck because once entered their store we agreed for them to check our bag but they can't check it while I don't open it!