Did you find something with a ObjCGN.com sticker? It most probably belongs to Manuel Carrasco Molina, a.k.a. @stuffmc.
I built "ObjCGN" in 2012 and have a gazillion stickers :) which I use to mark my hardware! Please get in touch with me in some ways!

Live long in our memories, Objective-Cologne. We renamed you SwiftConf in 2014. Farewell, Objective-C...

Please update your Bookmarks as we will abandon (noooooo...) this domain name in the future.