Fool MagicSource Ultimate Intrigue pg. 83
You can mislead magic items by virtue of your disguise.
Prerequisites: Deceitful, Disguise 1 rank, Use Magic Device 1 rank.
Benefit: When you are in disguise as a member of a particular race or a person of a particular alignment, you can use your Disguise bonus instead of your Use Magic Device bonus to emulate that race and alignment for the purpose of attempting to activate a magic item.