In one example in accordance with the present disclosure, an attention analysis system is described. The attention analysis system includes a database. The database includes 1) images indicative that users are paying attention to corresponding computing devices and 2) images indicative that users are not paying attention to corresponding computing devices. The system also includes an analyzer to extract multiple user position characteristics from a stream of images of a user disposed in front of a computing device. A comparer of the system determines, by comparing the stream of images of the user to the images in the database, whether the user is paying attention to the computing device.