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

Turn-Lock / Lockable door handles


Turn-Lock is a combined door handle and coded lock that can be used with common glass doors.
In order to secure glass doors, people typically hook a chain lock or U-lock around the handles. Turn-Lock overcomes this inconvenience. It combines a coded lock with the handles. The doors can therefore be locked without the need to think twice about where the chain lock or U-lock has been stored.


Guangdong University of Technology

Guangdong University of Technology
Guangzhou, China

SU Meixian,
Guangdong University of Technology

Go to profile