Costco as well...Keep walking. You signed no agreement to do this.
Sam's Club is one thing, and you have to let them swipe the yellow highlighter. You signed an agreement to be there...
But anywhere else? **** that noise. Say "no thanks" and keep walking. You are under NO obligation for any store to stop you at the door.
I watched a guy stroll on past the door/ receipt checker at Costco once, they followed him and again asked for his receipt, he refus d, so the manager was summoned, and they cancelled his membership, and issued him a no trespass warning. His wife was LIVID with him for being a dick and getting them banned from Costco.