Sign up for an Award
Participate with your entry in one of our professional or student awards.
Sign up for an awardLearn more:
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
When we use a blind, we are often confused about which way it rolls down or up. This is a new ball-chain concept that can help people from being confused. Unlike existing ball-chains, the arrowy chain helps people know intuitively which direction the blind is going to roll down or up.
Seoul National University
Seoul, South Korea
Hyejin Han,
Seoul National University