Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:


Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Sun Tzi Chi / signboards

Sun Tzi Chi

PERSISTENCE not only enriches the streets but makes the passersby safer.

Signboards sometimes cannot withstand the hitting of typhoons and then fall down on streets, which exposes people on streets to danger.

PERSISTENCE is retractable, since it displays its sign with the LEDs device due to the theory of persistence of vision.
With its volume diminished and LEDs panel retracted, PESISTENCE will not be blown down by the fierce wind.


National Yunlin University of Science and Technology

National Yunlin University of Science and Technology
Douliu City, Yunlin County, Taiwan