Screens on the Wall That Change Behaviour
Last updated:
The two-second test
Someone walking past at ten feet should be able to tell, in two seconds, whether things are on track. If they have to stop and study it, it is a dashboard on a wall rather than an operational display.
That means one main number, large, with a clear indication of good or bad, and everything else secondary.
What earns a place on the wall
- Today's target versus actual, for whatever the team controls
- The current queue or backlog, so effort can be redirected
- Anything blocked or waiting, with how long it has waited
- Safety or quality alerts that require immediate attention
- Nothing that nobody in that room can influence
The last rule is the important one. A display showing figures the people looking at it cannot affect is decoration, and it teaches everyone to ignore the screen.
Design for the room
- Font sizes tested at the actual viewing distance, not on a monitor
- High contrast that survives strong overhead lighting or sunlight
- Colour used sparingly and never as the only indicator
- No animation or transitions — movement in peripheral vision is distracting all day
- Screen orientation and mounting height chosen for the actual sight lines
Reliability determines credibility
A display that shows stale data or a connection error occasionally will be disbelieved permanently. Show the last-updated time prominently, and make failure obvious rather than silent.
Automatic recovery matters: after a power cut it should return to the display without anyone touching it.
Give the number a response
Every displayed measure should have an agreed response when it goes the wrong way. Without that, the screen reports problems into a room where everyone assumes someone else will act.
Agree the response when you agree the measure, and write it somewhere visible.
Cost and practicalities
A commercial display, a small media player and the software to drive it is typically a few thousand pounds per location including the build. Consumer televisions used continuously fail sooner and often lack the mounting and scheduling features.
Budget for remote management, so content and versions can be updated without visiting each site.
Frequently asked questions
What should we show in an office rather than a warehouse?
How often should it update?
Should displays show individual performance?
What does it cost to run?
Screens on the wall nobody looks at?
Usually they show too much of what the room cannot influence. Tell us what your team controls and we will suggest what to display.