1. A method of performing a biometric measurement on an individual, the method comprising: disposing a containment film between a skin site of the individual and a platen; directing light through the containment film to the skin site to illuminate the skin site under a plurality of distinct optical conditions; receiving light scattered from the skin site for the plurality of optical conditions; deriving a multispectral image of the skin site from the received light; and performing a biometric function with the derived multispectral image.