Facebook’s newest patent, granted May 25, aims to monitor users’ typing speed to predict emotions and adapt messages in response.

We took a look at some of Facebook’s emotion-based patents to understand how the company is thinking about capturing and responding to people’s emotional reactions, which has been a tricky area for consumer tech companies but key to their future. On the one hand, they want to identify which content is most engaging and respond to audience’s reactions, on the other emotion-detection is technically difficult, not to mention a PR and ethical minefield.

Source: Facebook’s Emotion Tech: Patents Show New Ways For Detecting And Responding To Users’ Feelings