ubiGaze: ubiquitous augmented reality messaging using gaze gestures.

We describe ubiGaze, a novel wearable ubiquitous method to augment any real-world object with invisible messages through gaze gestures that lock the message into the object. This enables a context and location dependent messaging service, which users can utilize discreetly and effortlessly. Further, gaze gestures can be used as an authentication method, even when the augmented object is publicly known. We developed a prototype using two wearable devices: a Pupil eye tracker equipped with a scene camera and a Sony Smartwatch 3. The eye tracker follows the users' gaze, the scene camera captures distinct features from the selected real-world object, and the smartwatch provides both input and output modalities for selecting and displaying messages. We describe the concept, design, and implementation of our real-world system. Finally, we discuss research implications and address future work.