Fitts cards for BCI target design
Use Fitts's Law principles to make BCI targets easier to acquire and harder to trigger accidentally.
Core rule What does Fitts's Law warn you about in BCI target design? Small, distant targets increase acquisition difficulty; noisy control needs larger, closer, safer targets. BCI interfaces should create margin for imperfect control rather than expose every wobble. Dense vs usable More commands on one screen or fewer safer targets? Optimize successful task completion, not apparent density. Objection Bigger buttons make the interface look less advanced. A stakeholder wants a sleek dense command panel. Your line For BCI users, advanced means controllable. A larger target is a performance feature, not a cosmetic compromise. Confusing visual sophistication with usable control.…
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