Uninterest

You have learnt how to manipulate perception so that you appear completely uninteresting to anyone. You are not invisible, but your being there is so unremarkable that you might as well be. You can pass through any checkpoint or secure area and interact with any objects you wish. People will not do things for you but will not take it amiss if you do these things yourself.
You become effectively invisible until the spell ends. Anything you are wearing or carrying is invisible as long as it is on your person.