The computer will interpret your body language to determine how you are feeling and then tailor its response intuitively, just as we do with each other. What's more, we will like it because it is far more intuitive than the keyboard, mouse and touch screen as an input method.
As a way of communicating, emotion is very old indeed. Long before humans invented spoken language we communicated non-verbally at an emotional level. It is still the principal way that we get information from each other, with around 70% of a message's content being conveyed by body language, about 20% by tone of voice and only 10% by words.
This is why we are able to instinctively recognise people's emotional state. Wherever you are in the world, you can tell when a stranger is angry or happy or sad. Indeed it is such an ancient way that many people can accurately gauge how animals are feeling based on their body language.
Affective computing allows humans and computers to go beyond keyboards and use these rich, non-verbal channels of communication to good effect.
How can computers know our emotions?
Computers will read our emotions by much the same process that humans do. It begins by connecting an array of sensors (cameras, microphones, skin conductivity devices) to a computer that gathers varied information about facial expression, posture, gesture, tone of voice and more.
Advanced software then processes the data, and by referencing a database of known patterns it is able to categorise what it is picking up from the sensors. The pattern might match for a range of emotions such as angry, disgusted, afraid, happy, sad, surprised, amused, contemptuous, contented, embarrassed, excited, guilty, proud of an achievement, relieved, satisfied, sensory pleasure or ashamed.
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