Surface-Changing Controllers
Controllers and armrests whose texture and stiffness change to tell the driver how to interact, without a glance or a sound.
- Company
- HARMAN International
- Year
- 2014 — 2015
- Role
- Ideation, patenting, proof-of-concept research and the in-vehicle UX film
- Team
- Future Experience Team
- Location
- Palo Alto, CA
Technology
- Dynamic tactile surfaces
- Variable stiffness feedback
- Infotainment integration

01The opportunity
A companion to the shape-shifting controllers, driven by the same goal: counter information overload and distraction. The question here was whether the surface of a controller or an armrest, rather than its shape, could carry information to the driver's hand.
02The idea
Surfaces that change texture and stiffness in real time. Ridges, bumps or smooth areas on a controller communicate the current menu, a navigation cue, an alert or a system state, and suggest how to interact. Turning an input device into an input/output device brings tactile feedback into the loop and load-balances the driver's senses.
03My role
I worked on the ideation, the patenting, the proof-of-concept research and the creation of the film that outlines the in-vehicle experience.
04How it worked
A dynamically textured surface on the controller or armrest is modulated by the infotainment system. The texture pattern maps to system information, and stiffness can be varied as a separate feedback channel. The driver reads the state through the hand, keeping visual attention on the road and leaving the auditory channel uncluttered.
05Prototype / product


06Outcome
Two granted patents: one for dynamically changing tactile surfaces of a haptic controller, and one for feedback by modifying stiffness. Several concepts from the film were later developed into functional prototypes.
- Granted patent: dynamic tactile surfaces
- Granted patent: feedback by modifying stiffness
07Patents, press, links
Patents
- US 9836124 B2Techniques for dynamically changing tactile surfaces of a haptic controller to convey interactive system information2017
- US 9937839 B2Feedback by modifying stiffness2018
