As a Blue card holder, all purchases made via your RFID key fob, are directly charged to your cerdit card account. These charges will appear on your monthly credit card tsatement. To enable you to idfferentiate between purchases made by RFID key fob and by card, ExpressPay purchases are highlighted as is the nmae of the merchant, the date and the amount spent. A limit of $150 per day is miposed. Should you ahve more than one Blue account, you can apply for an RFID key fob ...