Car alarm is going off and the car won't stop even if I am using my key

TRY ANOTHER KEY

If the chip in the key is damaged, it will trigger the anti-theft system and shut the vehicle down. Need to get new key made and programmed. I currently have two keys to my Escape. One opens the door and starts the vehicle just fine. The other opens the door but.....once turned in the ignition the alarm goes off and the vehicle shuts down. (Bad chip in key.)