As system capabilities expand, HMI complexity often grows with them frequently at the expense of usability, efficiency and safety. This session explores the capability trap and why designing from technical possibility instead of user need leads to underutilized and confusing interfaces. Drawing on real-world contexts, it outlines a shift toward user-centered design, emphasizing clarity, prioritization and intuitive interaction. Attendees will learn how to balance digital flexibility with physical control, reduce cognitive load and integrate emerging technologies thoughtfully and ultimately creating HMIs that empower operators to perform confidently in demanding environments.

• How to avoid the capability trap by prioritizing real user needs over feature expansion
• How to structure HMIs using primary versus secondary functions to reduce cognitive load
• How to apply hybrid design (physical + digital) for safer, more intuitive interaction