It is being developed for use on keyless doorbells, diagnosing genetic disorders, online education courses - to both verify identity and make sure you are paying attention - interactive cars, longevity prediction for possible use in the insurance industry and yes, even make sure only your cat eats from their bowl.
"This kind of tracking can expose intimate details about our lives - details that we don't want the government, law enforcement, or data marketers to know."
"Our next step is to incorporate moods, so that we can look at you and say 'You are happy', meaning you are more likely to buy this sort of a product, or that 'You are sad' and the ad can react to your mood."
See the full story here: http://www.bbc.com/news/uk-england-28307929?curator=MediaREDEF