Yes! When you drive to the exit gate, press the call button for assistance and speak with an attendant. Let them know that you have a SpotHero reservation and that you forgot to scan into the garage. Read your Rental ID number when prompted. If you pulled a ticket when you entered the garage, you will probably be asked to read the number on the ticket as well. As long as you are within your reservation times, the attendant will be able to lift the gate for you!