The approach is valuable for researchers and practitioners, since it enables novel user interfaces and applications to be created that employ a large number of targets, for example, a pursuits-based keyboard  ...  We quantify its accuracy for around 20 targets on a single circle and up to 160 targets on multiple circles. Finally, we implemented a pursuits-based keyboard app with 108 targets as proof-of-concept.  ...  As the the layout of the pursuit targets resembles old-style telephone interfaces we call this pursuit interfaces DialPlates.  ... 

For fewer targets, accuracy increases significantly. We believe our approach will enable more robust pursuit-based user interfaces, thus making it valuable for both researchers and practitioners.  ...  We introduce and evaluate a novel approach for detecting smooth pursuit eye movements that increases the number of distinguishable targets and is more robust against false positives.  ...  The improvement of smooth pursuit detection with the slope method can be either used for increasing the number of targets which offers the user more options or to provide a more robust interface with fewer  ...