Tongue as Trackpad: Conceptual Design and Proposed Validation of an Intraoral Capacitive Human–Computer Interface

Tongue as Trackpad presents a conceptual design for a tongue-operated, palate-mounted human–computer interface intended to support hands-free digital interaction.

The proposed system uses an intraoral palatal appliance with a capacitive sensing array to detect tongue movements and translate them into computer input commands. The report explores the mechanical arrangement, sensor topology, electronics architecture, interaction model, component integration, and potential applications in assistive technology and human–computer interaction.

The publication includes conceptual engineering illustrations, technical specifications, architectural diagrams, and suggested approaches for future evaluation.

The design is presented as an open concept for researchers, engineers, designers, and developers to examine, adapt, improve, and extend. It has not been demonstrated as a functioning prototype, clinically validated, or qualified for intraoral safety or manufacture.

The report is shared under Creative Commons Attribution 4.0 International (CC BY 4.0), allowing reuse and adaptation with appropriate attribution to Joseph Ribal Nasr.