For development of a concealed weapons detection technology, an AI machine learning trial is being conducted that will train a network measuring features from a non-imaging millimetre wave sensor. A varied cross-section of the general public (different ages, gender, ethnicity, sizes) needs to be measured, to overcome machine learning problems of over-fitting, class imbalance and selection bias. The bar is set at 100 individuals, so this is quite a challenge. Whilst being measured, subjects are required to stand naturally and motionless with selected objects concealed under their clothing. Who would like to volunteer? Forward this to those you think may be interested, so they may respond. All volunteers will receive the results of the trial. Many thanks, Neil