Blizzcon FAQ Updated (Prohibited Items)
Wondering what you can and can't bring to Blizzcon? Blizzard realizes some are confused by their rulings and have expanded their FAQ to let you know the specifics on the do's and don't's far as items go at the con.

Any bags being brought into BlizzCon should be smaller than 20 inches x 10 inches (roughly 2 sheets of paper side by side). Anyone with a bag larger than this may be refused entry. If you are taking part in the costume competition and require a larger bag to store your costume, please check with the ticket desk on your arrival. Blizzard reserves the right to search any bags being brought into BlizzCon and to refuse entry if they are found to contain prohibited items.

Check out the full update at Blizzcon's FAQ!