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

Lock Plug / Citybike

Lock Plug
Lock Plug

When ridng a bicycle, we need to keep our bicycle safe in somewhere.

In preparation, we should carry a lock device in order to secure our bicycle.

To avoid such inconvenience of carrying the lock separately around, this bike is designed.

This "Lock Plug" bike has a lock on the front frame. The locking device is made in a way that the middle part of a handle is connected to a bike frame and it has 5-digit dials.

It is a simple locking device because anyone can use easily.

By using this way, it is easy to secure bikes anytime, anywhere. The bike frame is also unique, beautiful and stylish in its form.

Client / Manufacturer

Sejong University

Sejong University
Seoul, South Korea


Sejong University

Sejong University
Seoul, South Korea