Designing deliberate pointer control
Small input choices can reduce accidental movement while preserving agency.
A head-controlled pointer should not begin moving the moment a camera sees a face. The person using it needs a safe way to understand the tracking response before it can affect the desktop.
HeadTracker therefore treats practice as a separate operating state. Calibration, a visible dead zone, and explicit pointer enablement make the boundary between observation and action clear.
The next trial will measure where unintended movement begins, how quickly control becomes tiring, and which settings people want to change themselves.