After completing the art gallery sequence you will get to go to Vera Security. Once their talk to Bassam and you will eventually offer to help him pick a new name for his sign. the sign is on the wall to his left. It is a small puzzle so firstly pull the wire out which will cut the power on one side. now we just have to spell a new name on right side with the glowing lights. to do this just pick one letter and place it into a space that is not occupied by another letter until you get them all in the desired place. I chose the name "ALADDIN" not sure if you can choose something different but this one works. After that talk to Bassam and the achievement will pop.