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

Please Do Come in / doorknob

Please Do Come in
Please Do Come in

These days It’s important to protect each person’s privacy.
So sometimes if other people suddenly got into our private space, it would be very unpleasant.
This design describes a light built-in doorknob which has two kinds of light color that visitors can notice and classify by intuition
whether the hosts of certain spaces(room,classroom,anywhere has a door) allow somebody come in or not.
(for example, green and red. Green light sign indicates entrance allowed, and the Red one indicates enterance prohibited)



Seoul, South Korea



Seoul, South Korea

Su Young Kim