So my roleplay server utilizes the planter box, which is limited to each player as it is the way to sell the product for the main currency.

Some players exploited it by joining and leaving a clan that is limited to three members and using their alt account to place additional planters.
As the plugin allowed anyone to use the planters by just authorizing the TC, they could plant and harvest on more planters than their personal limits.

Is it possible to add extra protection to the entity list that can only be used by its owner?