MiniDebConf Barcelona can be a nice opportunity to get our PGP keys signed by new people.
The process can be done 1 by 1 at any time. Just remember to bring (lots of) hard copy pieces of paper with the info of your keys, and an official document to prove your identity (passport, Spanish DNI, whatever).
You can wear a sticker to announce thay you want to sign PGP keys.
Sticker will be available at the infopoint, but if you want to print them yourself before than Saturday: keysigning.odt
If you're new to PGP or want to begin to use this public-key cryptograpy system, you can learn more at: