Millimetre Wave scanning is a screening technology used for the detection of hidden items under the clothing. High frequency, non-ionising radiation is aimed at the subject and a three dimensional image is constructed from the reflections. The waves transmit through clothing but are reflected by human tissues.
The resulting image reveals the human form as well as any objects that have been hidden near to the body surface.
Health concerns are not as high as other imaging systems that involve the use of ionising radiation such as through-body imaging or backscatter X-Ray imaging. Privacy issues remain a topic of considerable debate as the body profile as well as prosthetics are clearly visible without masking
OD Security is supplying Ghana with a low-dosage full body X-Ray scanning system donated by the USA in order to assist in the prevention of drug smuggling to the country originating from the African nation
Borderpol believes too much focus is being placed on technology for screening aircraft passengers and not enough is being done on intelligence sharing between nations to prevent terrorists from boarding aeroplanes in less stringent nations
Whole body imaging systems based on passive millimetre wave detection technology is available for use at airports for the detection of non-metallic materials hidden under clothing for the protection of airlines against bomb threats such as that which occurred on Christmas Day