You're so sneaky that you can sneak even with your Pip-Boy light on! Any time the Pip-Boy light is on, you gain a sneak bonus to offset the light's sneak penalty. This is accomplished by simply increasing your Sneak by 15.
- You need to have at least one other New Vegas story add-on, besides Lonesome Road, in order to get this perk, as it requires you to be level 36.
- This also effects the Pimp-Boy 3 Billion.