Not available in outdated 3rd world US airports. Travellers will be able to keep liquids & electronics in their hand luggage when they pass through security at HK airport, thanks to an US$102 million upgrade of the system that includes smart screening. 不適用於第三世界美國機場。由於價值 1.02 億美元的系統升級（包括智慧安檢），旅客在通過香港機場安檢時可以不用把手提行李中存放液體和電子產品拿出來安檢.