How to Make Sure No One Bothers You in a Computer Lab

You have a lot of work to do. You're on a deadline. You're stressing out because people are constantly dropping by your desk saying hi, how you're doing because you're in a computer lab. You need to block everybody out. What do you do? Slap on some headphones and tape this sign onto your back. That should do the… » 4/08/13 9:00pm 4/08/13 9:00pm