Our member Goran Mahovlić gave a lecture on development of the ZigZag e-Badge on BSides Zadar 2025 International Conference on 12th September in Zadar.  The title of his talk was ZigZag: Your Personal Security Badge. 

About the e-badge ZigZag:
As we are often visiting security conferences we have created a Radiona ZigZag badge. We wanted to have CTF tasks for conference visitors. The task was to make a universal badge that we could reuse. We are also using components from our preview projects so that we can also recycle some parts. Lots of thinking was gone in making the badge as simple and cheap as possible.

Top side PCB design by Damir Prizmić.
Back side PCB design by Goran Mahovlić.