The newest place to ban Google Glass may come as a shock as it's attendees are more than likely the part of the population who have adopted the technology with open arms-Comic Con. Though Comic Con has only banned Glass from being worn during any of the video screenings.
The majority of places that ban Google Glass are places where movies are being watched, or screened by the public. The idea is obvious, ban Glass and prevent pirating from happening easily. Same applies for Comic Con movie or show screenings. This is where big studios give their biggest fans a taste of movies or shows to come-even if the movie isn't complete. Sometimes the footage is raw and unedited, and other times it's refined. In either case, the footage is meant to be a gift of sorts to attendees. Not a preview for the public to watch in anticipation of the movie or show. Since this is the case, there are a set of rules in place, that have always been in place, the only difference is that Glass has been considered into the rule.
Here is Comic Con's policy when it comes to "Google Glass/Video Recorders/Camera Phones" which shows that Glass isn't being singled out. "Remember recording of footage on the screens during panels is prohibited (see below:No Video or Audio Recording of Movie and TV Panels). This includes Google Glasses. You cannot wear Google Glass during footage viewing in any program room. If your Google Glasses are prescription, please bring a different pair of glasses to use during these times. Also, please turn off your device's (phones, tablets, etc.) screens and put them away during the screening of panel footage. Not doing so interferes with everyone's viewing quality and causes security to think you're recording the clip." While this may be an inconvenience, it's a necessary one. More often than not the footage shown during these periods of Comic Con are copyrighted, and could cause serious legal issues if leaked. Also Comic Con isn't banning Google Glass from the entire event. So while walking around to different booths, hanging out with friends or just enjoying the views, Google Glass will be allowed.