The passenger screening system also expands to 28 additional airports this year . Boarding passes of approved passengers will contain information in a barcode . Officials : The PreCheck systems at seven airports have handled more than 1000 passengers .
The expedited screening initiative PreCheck expands to 28 additional airports this year . Boarding passes of approved passengers will include information in a barcode . Officials : Existing PreCheck lines at seven airports have handled more than 336,000 passengers .