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:

iF SOCIAL IMPACT PRIZE
(free of charge)

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

Publish your project

RED·GREEN / lock

RED·GREEN
RED·GREEN

Generally people face a common problem that they do not know how to correctly identify the right direction of key rotation when opening a door.
"RED •GREEN "solves this problem by visual identity. When the keyhole is vertical,
it means the door is open, and the slot around the keyhole displays green,
Horizontal means that the door is closed and the slot around the keyhole display red,
it is easy for people to recognize whether the door is open or not.

Design

Zhe Jiang University

Zhe Jiang University
Ning Bo, China

Lin Lin;Peng Liu; Xuan Chen