A slight idea to prevent mis-connection when inserting USB

Everyone should have once experienced trying to insert upside down incorrectly when connecting USB. This is an idea to make it easy to use it with a slight idea.

Eidetic USB by Lim Jae Min »Yanko Design
http://www.yankodesign.com/2012/02/17/stick-it-in-correct/

USB can not be inserted unless its top and bottom orientation is incorrect, as you can see.


If you change this square insertion port to this form OK. You will be able to understand it even by touching it.


Looking from above it looks like this. That makes it very easy to understand.