The passenger screening system also expands to 28 additional airports this year . Boarding passes of approved passengers will contain information in a barcode . Officials : Passengers who qualify may only rarely have to remove their shoes , jackets and belts , and extract laptops or liquids from bags . The PreCheck systems at seven airports have handled more than 1000 passengers .
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 .