EgoGesture

EgoGesture is a term used in human-computer interaction and digital interface design to describe a user-generated gesture or gesture sequence intended to convey the user's identity, preferences, or authorization to a system. It functions as a self-referential input that can be recognized by sensors and interpreted by software to personalize responses, grant access, or adjust settings, often in environments where traditional login is impractical.

Origin and usage: The concept was introduced in contemporary HCI discussions as a way to address identity and personalization in gesture-based interfaces, particularly in mobile, wearable, and augmented reality contexts. It is not tied to a single vendor and can be implemented across platforms that support gesture recognition and user modelling.

Mechanism: An EgoGesture comprises a specific motion or gesture sequence chosen by the user. The system associates the gesture with a user profile after an initial enrollment, then recognizes subsequent performances of the gesture to trigger actions. Design considerations include distinctiveness, ease of recall, tolerance to variation, and safety against spoofing.

Applications: Personalization of content, unlocking features or data, switching between user profiles, and controlling privacy settings. In shared devices, EgoGesture can enable rapid, low-effort user switching without typing or passwords.

Privacy and ethics: The use of ego-centric input raises concerns about consent, traceability, and data minimization. Systems should provide clear opt-in, feedback, and the ability to revoke or change the gesture, with robust protection against unauthorized replication.