A device from the company Barnacle Parking Enforcement, however, aims to take some of the cost and hassle out of the process. The Barnacle stops parking violators from dashing off without paying what's owed to the meter maids. It's a flat immobilization device that uses super strong suction cups to stick to a windshield, so that drivers can't see where they're going if they try to flee the scene. But the Barnacle makes that move a little more difficult by sounding an alarm if the car moves from its parking spot. " The creators of the Barnacle say it has many significant advantages over traditional "boot" immobilization clamps.