New advanced full-body scanners are now operational at the John F Kennedy International Airport (JFK) in the US to detect concealed weapons and explosives.
The scanners will use X-ray technology to scan under clothes for dangerous materials, including plastics.
US Department of Homeland Security (DHS) secretary Janet Napolitano said the new machine will help keep aviation safe and that the level of radiation from the device is low.
The device can spot any non-metal objects hidden on the passenger's body that would not be detected by the old scanners.
The DHS will equip 300 airports with full-body scanners by the end of 2010, according to nbcnewyork.com.