You can click the Swipe Items interaction close to something and your Sim might steal the intended object. It will then appear in the family inventory.
Kleptomaniacs can only swipe three items per day.
Kleptomaniacs can swipe some items from community lots. I.e. the kleptomaniac should be able to swipe a car parked at the stadium but won't be able to swipe paintings from the art gallery or a grill at a barbeque park.
If a Sim is caught swiping an object, they will be kicked out immediately and the relationship with the sim who caught the kleptomaniac will go down.
Sims with this trait can only swipe items between 7pm and 6am.
Kleptomaniacs can swipe items from outside a house even if they have not been invited to go in. To be able to steal from the inside, the sim has to be invited in.
The maximum value of the item a kleptomaniac is able to swipe is determined by this formula: Career level X 350.
Sim can swipe any movable object, no matter how big. However, there are some items that a kleptomaniac won't be able to swipe (see list below).
In The Sims 3 for console, Sims with the kleptomaniac trait are able to steal from the inside of community lots, unlike the PC version.
Most, if not all, maids have the kleptomaniac trait.
Always click very close to the object you want to rob, because sometimes, if you click in the general area of the expensive car you want to sell to make money, the kleptomaniac sim will instead rob the cheap lamp that was directly underneath the spot you clicked on, wasting one of the three opportunities.
If a sim should take a guitar out of their inventory and drop it on someone else's lot (Through a serenade perhaps), it does not appear to be recoverable through dragging and dropping or kleptomania. (Probably needs verification)
Because sims can swipe three objects per day, sims can swipe three objects after 7pm but before midnight and then swipe three more after midnight but before 6am.
There are some items that are not able to be swiped, even if meeting the requirements:
- Large outdoor objects, like swings, clotheslines, large toys, slides beds, fridges, counters, hot tubs (for instance the Jungle Gym). However sculptures bigger than a Sim can actually be swiped.
Sims in the firefighter career are strangely able to swipe items only when they are putting out fires in a house. The way it works is the same as kleptomaniacs.
Sims in the investigator career can swipe items when they are breaking into a house (on some investigation jobs). The way it works is the same as kleptomaniacs although the action is called "Take as Evidence".