I have the cell phone ready to text back the fraud alert system for our citi doublecash mc then swipe the card again. If we fill up before the flight and get gas at our destination, the change in zip codes in the short duration flags the charge. True, Amex always goes through (it’s also in my wallet) but with the citi doublecash it’s worth the 2% back to me... and their fraud alert system has helped us with actually fraudulent charges in the past. Sent from my iPhone using Tapatalk