My girlfriend and I bought tickets through Ticketmaster and are going to register and pick up our badges on Thursday.  However, she has to work late on Friday, and will be unable to attend that particular day  I would like to take my dad to the con on that day because he's a huge MST3K fan, and I was thinking instead of having to buy him a one day pass, he could just use my gf's badge.  Just wondering if this is something I'd be able to do. I'm sure the official rule is no, but is this something they'd be really strict about. Do they check ID's or have your picture on your badge. I figure it shouldn't be a big deal since it's just swapping one person for another for just one day.  I just wanna make sure that this isn't something they really frown upon and would lead to getting con rights revoked.  Thanks.