Its quite a while before EXTRO 4 happens and I'd rather have this discussion now rather than the months leading up to the conference. This isn't the forum to get too detailed about security, except that I'd like to know that at least the issue will be addressed. Of the many lurkers on this list, I often wonder how many are hate motivated. Are there any of those "voluntary human extinction" types with Ted Kazenski tendencies? I expect Transhumanism to be getting pretty close to critical mass in popularity in a year or two. We may not be serious threats to them now, but it is inevitable that such will be the case in the near future.
I'm not involved with organizing the event, so I can only recommend that we all keep a close eye on unknown individuals leaving back packs or bags unattended. And maybe those with concealed weapons licenses should contact event organizers and volunteer to carry their g** word. I look forward to a safe EXTRO 4 knowing how alert we _can_ be.