you are held responsible for something in your general vicinity but not on your person, whether you knew about it or not.
This is called “constructive possession,” and if it seems like a legal concept that would lead to a lot of disagreements about who-knew-what and what-belonged-to-whom, you are correct.
Constructive possession is a legal fiction used to describe a situation where an individual has actual control over personal property, but not actual physical control. In other words, if the item is in your car, your room, or some area over which you have control, just not in your pocket, backpack, or in your hand.
Under the laws of most states, a person with constructive possession is treated no differently than a person with actual possession.