Self-initiated and featured on
99% Invisible

Fewer than 30% of us choose revolving doors over swinging doors when given the option. This is significant considering that revolving doors are more energy efficient, and save money and CO2. For example, swinging doors exchange 8 times more air than revolving doors. For this project, we wanted to see how can signage be used to help increase people’s use of revolving doors. It was part wayfinding, part user experience, and included a lot of interesting research and number crunching. Check out the article on Impact Design Hub, the TEDx talk where I describe the project, or the 99 Percent Invisible podcast (below) that features the project.

Most people choose to use swinging doors over revolving doors when given the option.


The 1st sign was crude but prompted 58% of people to use revolving doors. The 2nd sign was directional but small and prompted 53% of people to use revolving doors. The 3rd and last sign was two feet wide and a foot tall and prompted 71% of people to use revolving doors.

We created a Revolving Door Toolkit that was purposely simple so that others could quickly modify and install them outside their revolving doors. Nearly 4,000 people have downloaded the toolkit.


I talked about revolving doors and behavior change in a TEDx talk I gave in Rome, as part of TEDx Transmedia. Watch it here.


99% Invisible features the project as a podcast. They even tried out the Revolving Door Toolkit in Oakland, CA. Listen to it below, starting at minute 2:30. Listen here.


Read my article about the project on


Andrew Shea


We design physical spaces, printed materials, collaborative experiences, and digital platforms to support creative communities and elevate civic, educational, and environmental initiatives.

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