Researchers at Barcelona's Telefonica Research lab have developed a smartphone-based algorithm that determines a user's level of boredom based on how much they're using the device. The algorithm also takes a number of factors such as time of day and how long it's been since receiving a call or text into account as well. With it, the researchers were able to accurately gauge a user's level of boredom 83 percent of the time.

http://www.engadget.com/2015/09/03/y...ch-you-use-it/