This isn't the first time this has happened, not to me, not to others — you go to EF, potentially to a different country where you don't necessarily have internet access (EF public WiFi helps a lot!), don't necessarily bring a laptop with you, and you face roaming charges if your mobile phone even works.
But you want to meet up with someone you'd known for a good while online, you know you both will be at EF, and you both spend most of the con's free time looking for each other. And if you don't know each other's looks enough or haven't agreed on something like what clothes you'll be wearing, chances are you won't find each other in the 1000+ people that go to Eurofurence.
So I thought, let's have a topic about this. Let's share ideas about how to make things work out better; how do/would you make sure you find your friend at a con, without sitting at the entrance all day or waving a huge sign with someone's (or your) name on it? (The one is not really fun, the other is mildly awkward, I'm sure you agree.) And, on the other hand, how could the con itself help, if at all?