The app mentioned in the above TED talk by Rana @kaliouby made me think.
It does not matter whether you are running an e-commerce website, have an app or posting to your blog.
Imagine if you were able determine the current mood of your audience: a relaxed and happy user is more open to additional content and – for example – you can show more product suggestions. Whereas a tired and frustrated visitor would get only a simplified version of the same page. All content and app screens could be tailored to the current emotional state of the user. Personalisation at its best! We could cheer users up with images or copy. Possibilities are endless (the device’s camera must be switched on though).
What if the camera is not available or the user has not granted access? I can think about additional ways to measure emotion and mood: the speed of typing, spelling errors, movement of the phone, sound level and so on.
Update: the emotion sensor does exist: https://www.technologyreview.com/s/508716/wrist-sensor-tells-you-how-stressed-out-you-are/