Take a look at Eyecare Business Magazine :
'How high-tech is this?
Kirk & Kirk unveiled a special ad campaign at Cannes Lions International Festival of Creativity. Specialist technology ‘talks’ directly to the individual and collects information through a video sensor around three data points: gender recognition, clothing color recognition, and if the user wears glasses. The software then determines the best eyewear color match from the Kirk & Kirk Kaleidoscope collection.'