Duarte, RodrigoLopes, Nuno VieiraCoelho, Paulo Jorge2026-01-192026-01-192025-12-17Duarte,R.; Lopes,N.V.; Coelho, P.J. A Low-Cost Head-ControlledandSip-and-Puff Mouse: SystemDesignand Preliminary Findings. Electronics 2025, 14, 4953. https://doi.org/10.3390/ electronics142449532079-9292http://hdl.handle.net/10400.8/15399This article belongs to the Special Issue Assistive Technology: Advances, Applications and Challenges.The authors thank the ciTechCare—Center for Innovative Care and Health Technology, Polytechnic University of Leiria, for laboratory access and feedback from occupational therapy professionals.This work introduces a low-cost, wearable assistive mouse designed to support digital interaction for individuals with motor impairments. The system combines inertial sensing for head-movement tracking and a pressure-based interface for simulating mouse clicks via “sip-and-puff” actions. The device enables full mouse control (pointer movement, clicks, and double-clicks) without relying on hand mobility. Preliminary evaluations, conducted with input from occupational therapy professionals, demonstrated promising usability and functionality comparable to commercial devices. The proposed solution offers a cost-effective, open-source alternative to existing adaptive technologies, with future development aimed at broader testing and integration in rehabilitation settings. Future work will include usability testing with individuals presenting real motor impairments to validate clinical applicability.engAccessibilityAdaptive mouseAssistive technologyBluetooth Low EnergyDigital inclusionHead trackingInertial measurement unitMotor disabilitiesPressure sensorSip-and-puffjournal article10.3390/electronics14244953